bloomberg.com 2025-08-26 - Twenty activists urging company to sever ties with Israeli military were arrested last week. Executive Brad Smith said he welcomed discussion but not disruption.
For the better part of a year, Microsoft Corp. has failed to quell a small but persistent revolt by employees bent on forcing the company to sever business ties with Israel over its war in Gaza.
The world’s largest software maker has requested help from the Federal Bureau of Investigation in tracking protests, worked with local authorities to try and prevent them, flagged internal emails containing words like “Gaza” and deleted some internal posts about the protests, according to employees and documents reviewed by Bloomberg. Microsoft has also suspended and fired protesters for disrupting company events.
Despite those efforts, a steady trickle of employees, sometimes joined by outside supporters, continue to speak out in an escalating guerilla campaign of mass emails and noisy public demonstrations. While still relatively small, the employee activism is notable given the weakening job market and the Trump administration’s crackdown on pro-Palestinian protests.
Last week, 20 people were arrested on a plaza at Microsoft’s Redmond, Washington, headquarters after disregarding orders by police to disperse. Instead, they chanted and called out Microsoft executives by name, linking arms as police dismantled their makeshift barricades and, one by one, zip-tied them and led them away.
On Tuesday, protesters occupied the office of Microsoft President Brad Smith, sharing video on the Twitch livestreaming platform that showed them chanting, hanging banners and briefly attempting to barricade a door with furniture. Smith didn’t appear to be there. Police detained at least two people who entered a building that houses the offices of senior executives, said Jill Green, a spokesperson for the Redmond Police Department. Others were protesting outside, she said.
An employee group called No Azure for Apartheid says that by selling software and artificial intelligence tools to Israel’s military, the company’s Azure cloud service is profiting from the deaths of civilians. Microsoft denies that, but the protests threaten to dent its reputation as a thoughtful employer and reasonable actor on the world stage. In recent years, Microsoft has generally stayed above the fray while its industry peers battled antitrust investigations, privacy scandals or controversial treatment of employees.
Now Microsoft is being forced to grapple with perhaps the most politically charged issue of the day: Israel’s treatment of Palestinians. Earlier this month, the company announced an investigation into reports by the Guardian newspaper and other news outlets that Israel’s military surveillance agency intercepted millions of Palestinian mobile phone calls, stored them on Microsoft servers then used the data to select bombing targets in Gaza. An earlier investigation commissioned by Microsoft found no evidence its software was used to harm people.
Microsoft says it expects customers to adhere to international law governing human rights and armed conflict, and that the company’s terms of service prohibit the use of Microsoft products to violate people’s rights. “If we determine that a customer — any customer — is using our technology in ways that violate our terms of service, we will take steps to address that,” Smith said in an interview last week, adding that the investigation should be completed within several weeks. Smith said employees were welcome to discuss the issue internally but that the company will not tolerate activities that disrupt its operation or staffers.
After Hamas’s deadly Oct. 7, 2023 attack on Israel, Microsoft executives were quick to offer condolences and support to employees. “Let us stand together in our shared humanity,” then-human resources chief Kathleen Hogan said in a note a few days after the attacks, which killed some 1,200 people, including civilians and soldiers.
Unity was short-lived: Jewish employees lamented what they said was a troubling rise in antisemitism. Palestinian staffers and their allies accused executives of ignoring concerns about their welfare and the war in Gaza, which has killed tens of thousands. The debate continued in internal chatrooms, meetings with human resources leaders and in question-and-answer sessions with executives. But the chatter was mostly limited to Microsoft’s halls.
That changed in early April at a bash Microsoft hosted to mark the 50th anniversary of the company’s founding. Early that morning, Vaniya Agrawal picked up Ibtihal Aboussad and drove to Microsoft’s campus. The two early-career company engineers — who respectively hail from the Chicago area and Morocco — had both decided to leave Microsoft over its ties to Israel, which had been documented in a series of articles, including by the Associated Press, and reached out to No Azure for Apartheid. “This isn’t just Microsoft Word with a little Clippy in the corner,” said Agrawal, who was arrested on Wednesday. “These are technological weapons. Cloud and AI are just as deadly as bombs and bullets.”
theregister.com 21.08.2025 - Better late than never after SharePoint assault?
Microsoft has reportedly stopped giving Chinese companies proof-of-concept exploit code for soon-to-be-disclosed vulnerabilities following last month's SharePoint zero-day attacks, which appear to be related to a leak in Redmond's early-bug-notification program.
The software behemoth gives some software vendors early bug disclosures under its Microsoft Active Protections Program (MAPP), which typically delivers info two weeks before Patch Tuesday. MAPP participants sign a non-disclosure agreement, and in exchange get vulnerability details so that they can provide updated protections to customers more quickly.
According to Microsoft spokesperson David Cuddy, who spoke with Bloomberg about changes to the program, MAPP has begun limiting access to companies in "countries where they're required to report vulnerabilities to their governments," including China. Companies in these countries will no longer receive "proof of concept" exploit code, but instead will see "a more general written description" that Microsoft sends at the same time as patches, Cuddy told the news outlet.
Microsoft did not respond to The Register's inquiries.
In late July, China-based crews – including government goons, data thieves, and a ransomware gang – exploited a couple of bugs that allowed them to hijack on-premises SharePoint servers belonging to more than 400 organizations and remotely execute code.
Redmond disclosed the two SharePoint flaws during its July 8 Patch Tuesday event, and a couple weeks later admitted that the software update didn't fully fix the issues. The Windows giant issued working patches on July 21 to address its earlier flawed fixes, but by then the bugs were already under mass exploitation.
This led some to speculate that whomever was exploiting the CVEs knew about them in advance – and also knew how to bypass the original patches.
"A leak happened here somewhere," Dustin Childs, head of threat awareness at Trend Micro's Zero Day Initiative (ZDI), told The Register in July. "And now you've got a zero-day exploit in the wild, and worse than that, you've got a zero-day exploit in the wild that bypasses the patch, which came out the next day."
One possible explanation: Someone leaked details from the MAPP update to Beijing.
Childs said ZDI was able to poke holes in the initial patches. China does not lack talented security researchers capable of doing likewise.
At the time, Microsoft declined to answer The Register's specific questions about what role, if any, MAPP played in the SharePoint attacks. "As part of our standard process, we'll review this incident, find areas to improve, and apply those improvements broadly," a Microsoft spokesperson told us in July.
Microsoft today declined to comment on its internal investigation.
Childs today told The Register that the MAPP change "is a positive change, if a bit late. Anything Microsoft can do to help prevent leaks while still offering MAPP guidance is welcome."
"In the past, MAPP leaks were associated with companies out of China, so restricting information from flowing to these companies should help," Childs said. "The MAPP program remains a valuable resource for network defenders. Hopefully, Microsoft can squelch the leaks while sending out the needed information to companies that have proven their ability (and desire) to protect end users."
bleepingcomputer.com - Microsoft has warned customers to mitigate a high-severity vulnerability in Exchange Server hybrid deployments that could allow attackers to escalate privileges in Exchange Online cloud environments undetected.
Exchange hybrid configurations connect on-premises Exchange servers to Exchange Online (part of Microsoft 365), allowing for seamless integration of email and calendar features between on-premises and cloud mailboxes, including shared calendars, global address lists, and mail flow.
However, in hybrid Exchange deployments, on-prem Exchange Server and Exchange Online also share the same service principal, which is a shared identity used for authentication between the two
By abusing this shared identity, attackers who control the on-prem Exchange can potentially forge or manipulate trusted tokens or API calls that the cloud side will accept as legitimate, as it implicitly trusts the on-premises server.
Additionally, actions originating from on-premises Exchange don't always generate logs associated with malicious behavior in Microsoft 365; therefore, traditional cloud-based auditing (such as Microsoft Purview or M365 audit logs) may not capture security breaches if they originated on-premises.
"In an Exchange hybrid deployment, an attacker who first gains administrative access to an on-premises Exchange server could potentially escalate privileges within the organization's connected cloud environment without leaving easily detectable and auditable trace," Microsoft said on Wednesday in a security advisory describing a high-severity privilege escalation vulnerability now tracked as CVE-2025-53786.
The vulnerability affects Exchange Server 2016 and Exchange Server 2019, as well as Microsoft Exchange Server Subscription Edition, the latest version, which replaces the traditional perpetual license model with a subscription-based one.
While Microsoft has yet to observe in-the-wild exploitation, the company has tagged it as "Exploitation More Likely" because its analysis revealed that exploit code could be developed to consistently exploit this vulnerability, increasing its attractiveness to attackers.
propublica.org - Microsoft announced that Chinese state-sponsored hackers had exploited vulnerabilities in its popular SharePoint software but didn’t mention that it has long used China-based engineers to maintain the product.
ast month, Microsoft announced that Chinese state-sponsored hackers had exploited vulnerabilities in SharePoint, the company’s widely used collaboration software, to access the computer systems of hundreds of companies and government agencies, including the National Nuclear Security Administration and the Department of Homeland Security.
The company did not include in its announcement, however, that support for SharePoint is handled by a China-based engineering team that has been responsible for maintaining the software for years.
ProPublica viewed screenshots of Microsoft’s internal work-tracking system that showed China-based employees recently fixing bugs for SharePoint “OnPrem,” the version of the software involved in last month’s attacks. The term, short for “on premises,” refers to software installed and run on customers’ own computers and servers.
Microsoft said the China-based team “is supervised by a US-based engineer and subject to all security requirements and manager code review. Work is already underway to shift this work to another location.”
It’s unclear if Microsoft’s China-based staff had any role in the SharePoint hack. But experts have said allowing China-based personnel to perform technical support and maintenance on U.S. government systems can pose major security risks. Laws in China grant the country’s officials broad authority to collect data, and experts say it is difficult for any Chinese citizen or company to meaningfully resist a direct request from security forces or law enforcement. The Office of the Director of National Intelligence has deemed China the “most active and persistent cyber threat to U.S. Government, private-sector, and critical infrastructure networks.”
ProPublica revealed in a story published last month that Microsoft has for a decade relied on foreign workers — including those based in China — to maintain the Defense Department’s cloud systems, with oversight coming from U.S.-based personnel known as digital escorts. But those escorts often don’t have the advanced technical expertise to police foreign counterparts with far more advanced skills, leaving highly sensitive information vulnerable, the investigation showed.
ProPublica found that Microsoft developed the escort arrangement to satisfy Defense Department officials who were concerned about the company’s foreign employees, and to meet the department’s requirement that people handling sensitive data be U.S. citizens or permanent residents. Microsoft went on to win federal cloud computing business and has said in earnings reports that it receives “substantial revenue from government contracts.” ProPublica also found that Microsoft uses its China-based engineers to maintain the cloud systems of other federal departments, including parts of Justice, Treasury and Commerce.
In response to the reporting, Microsoft said that it had halted its use of China-based engineers to support Defense Department cloud computing systems, and that it was considering the same change for other government cloud customers. Additionally, Defense Secretary Pete Hegseth launched a review of tech companies’ reliance on foreign-based engineers to support the department. Sens. Tom Cotton, an Arkansas Republican, and Jeanne Shaheen, a New Hampshire Democrat, have written letters to Hegseth, citing ProPublica’s investigation, to demand more information about Microsoft’s China-based support.
Microsoft said its analysis showed that Chinese hackers were exploiting SharePoint weaknesses as early as July 7. The company released a patch on July 8, but hackers were able to bypass it. Microsoft subsequently issued a new patch with “more robust protections.”
The U.S. Cybersecurity and Infrastructure Security Agency said that the vulnerabilities enable hackers “to fully access SharePoint content, including file systems and internal configurations, and execute code over the network.” Hackers have also leveraged their access to spread ransomware, which encrypts victims’ files and demands a payment for their release, CISA said.
akamai.com - Akamai researchers previously outlined the potential for malicious use of UIA.
Now, Akamai researchers have analyzed a new variant of the Coyote malware that is the first confirmed case of maliciously using Microsoft’s UI Automation (UIA) framework in the wild.
The new Coyote variant is targeting Brazilian users, and uses UIA to extract credentials linked to 75 banking institutes’ web addresses and cryptocurrency exchanges.
To help prevent Coyote infections and UIA abuse more broadly, we’ve included indicators of compromise and additional detection measures in this blog post.
In December 2024, we published a blog post that highlighted how attackers could abuse Microsoft’s UIA framework to steal credentials, execute code, and more. Exploitation was only a proof of concept (PoC) — until now.
Approximately two months after the publication of that blog post, our concerns were validated when a variant of the banking trojan malware Coyote was observed abusing UIA in the wild — marking the first known case of such exploitation.
This UIA abuse is the latest of these malicious Coyote tracks in their digital habitat since its discovery in February 2024.
In this blog post, we take a closer look at the variant to better understand how UIA is being leveraged for malicious purposes, and what it means for defenders.
What is Coyote malware?
Coyote is a well-known malware family that was discovered in February 2024 and has caused significant damage in the Latin America region ever since. Coyote is a trojan malware that employs various malicious techniques, such as keylogging and phishing overlays, to steal banking information.
It uses the Squirrel installer to propagate (hence the name “Coyote,” which pays homage to the coyotes’ nature to hunt squirrels). In one of its most well-known campaigns, Coyote targeted Brazilian companies in an attempt to deploy an information stealing Remote Access Trojan within their systems.
After the initial discovery of Coyote, many security researchers uncovered details of its operations and provided in-depth technical analyses. One such examination, published by Fortinet in January 2025, shed light on Coyote’s internal workings and attack chain.
UIA abuse
We’ve expanded on those analyses and discovered one new key detail: Coyote now leverages UIA as part of its operation. Like any other banking trojan, Coyote is hunting banking information, but what sets Coyote apart is the way it obtains this information, which involves the (ab)use of UIA.
theregister.com - A week after Microsoft told the world that its July software updates didn't fully fix a couple of bugs, which allowed miscreants to take over on-premises SharePoint servers and remotely execute code, researchers have assembled much of the puzzle — with one big missing piece.
How did the attackers, who include Chinese government spies, data thieves, and ransomware operators, know how to exploit the SharePoint CVEs in such a way that would bypass the security fixes Microsoft released the following day?
"A leak happened here somewhere," Dustin Childs, head of threat awareness at Trend Micro's Zero Day Initiative (ZDI), told The Register. "And now you've got a zero-day exploit in the wild, and worse than that, you've got a zero-day exploit in the wild that bypasses the patch, which came out the next day."
Countdown to mass exploitation
It all began back in May, on stage at the Pwn2Own competition.
Pwn2Own is the hackers' equivalent of the World Series, and ZDI usually hosts these competitions twice a year.
The most recent contest occurred in Berlin, beginning May 15. On day 2 of the event, Vietnamese researcher Dinh Ho Anh Khoa combined an auth bypass and an insecure deserialization bug to exploit Microsoft SharePoint and win $100,000.
"What happens on the stage is just one part of Pwn2Own," Childs said.
After demonstrating a successful exploit, the bug hunter and vendor are whisked away into a private room where the researcher explains what they did and provides the technology company with a full write-up of the exploit. Assuming it's not a duplicate or already known vulnerability, the vendor then has 90 days to issue a fix before the bug and exploit are made public.
"So Microsoft received the working exploit in a white paper describing everything on that day," Childs said.
Less than two months later, on July 8, the software giant disclosed the two CVEs – CVE-2025-49704, which allows unauthenticated remote code execution, and CVE-2025-49706, a spoofing bug – and released software updates intended to patch the flaws. But mass exploitation had already started the day before, on July 7.
"Sixty days to fix really isn't a bad timeline for a bug that stays private and stays under coordinated disclosure rules," Childs said. "What is bad: a leak happened."
There's another key date that may shed light on when that leak happened.
Patch Tuesday happens the second Tuesday of every month – in July, that was the 8th. But two weeks before then, Microsoft provides early access to some security vendors via the Microsoft Active Protections Program (MAPP).
These vendors are required to sign a non-disclosure agreement about the soon-to-be-disclosed bugs, and Microsoft gives them early access to the vulnerability information so that they can provide updated protections to customers faster.
"The first MAPP drop occurs at what we call r minus 14, which is two weeks ahead of the [Patch Tuesday] release," Childs said – that is, beginning on June 24. "Then, on July 7, we started to see attacks. July 8, the patches were out and were almost immediately bypassed."
ZDI, along with other security providers, poked holes in the initial patches and determined that the authentication bypass piece was too narrow, and attackers could easily bypass this fix. In fact, anyone who received the early MAPP information about the CVEs and software updates "would be able to tell that this is an easy way to get past it," Childs said.
On July 18, Eye Security first sounded the alarm on "large-scale exploitation of a new SharePoint remote code execution (RCE) vulnerability chain in the wild."
A day later, Microsoft warned SharePoint server users that three on-prem versions of the product included a zero-day flaw that was under attack – and that its own failure to completely patch the holes was to blame.
By July 21, Redmond had issued software updates for all three versions. But by then, more than 400 organizations had been compromised by at least two Chinese state-sponsored crews, Linen Typhoon and Violet Typhoon, plus a gang Microsoft tracks as Storm-2603, which was abusing the vulnerabilities to deploy ransomware.
Microsoft declined to answer The Register's specific questions for this story. "As part of our standard process, we'll review this incident, find areas to improve, and apply those improvements broadly," a Microsoft spokesperson said in an emailed statement.
One researcher suggests a leak may not have been the only pathway to exploit. "Soroush Dalili was able to use Google's Gemini to help reproduce the exploit chain, so it's possible the threat actors did their own due diligence, or did something similar to Dalili, working with one of the frontier large language models like Google Gemini, o3 from OpenAI, or Claude Opus, or some other LLM, to help identify routes of exploitation," Tenable Research Special Operations team senior engineer Satnam Narang told The Register.
"It's difficult to say what domino had to fall in order for these threat actors to be able to leverage these flaws in the wild," Narang added.
theregister.com - Under oath in French Senate, exec says it would be compelled – however unlikely – to pass local customer info to US admin
Microsoft says it "cannot guarantee" data sovereignty to customers in France – and by implication the wider European Union – should the Trump administration demand access to customer information held on its servers.
The Cloud Act is a law that gives the US government authority to obtain digital data held by US-based tech corporations irrespective of whether that data is stored on servers at home or on foreign soil. It is said to compel these companies, via warrant or subpoena, to accept the request.
Talking on June 18 before a Senate inquiry into public procurement and the role it plays in European digital sovereignty, Microsoft France's Anton Carniaux, director of public and legal affairs, along with Pierre Lagarde, technical director of the public sector, were quizzed by local politicians.
Asked of any technical or legal mechanisms that could prevent this access under the Cloud Act, Carniaux said it had "contractually committed to our clients, including those in the public sector, to resist these requests when they are unfounded."
"We have implemented a very rigorous system, initiated during the Obama era by legal actions against requests from the authorities, which allows us to obtain concessions from the American government. We begin by analyzing very precisely the validity of a request and reject it if it is unfounded."
He said that Microsoft asks the US administration to redirect it to the client.
"When this proves impossible, we respond in extremely specific and limited cases. I would like to point out that the government cannot make requests that are not precisely defined."
Carniaux added: "If we must communicate, we ask to be able to notify the client concerned." He said that under the former Obama administration, Microsoft took cases to the US Supreme Court and as such ensured requests are "more focused, precise, justified and legally sound."
Unknown threat actors have breached the National Nuclear Security Administration's network in attacks exploiting a recently patched Microsoft SharePoint zero-day vulnerability chain.
NNSA is a semi-autonomous U.S. government agency part of the Energy Department that maintains the country's nuclear weapons stockpile and is also tasked with responding to nuclear and radiological emergencies within the United States and abroad.
A Department of Energy spokesperson confirmed in a statement that hackers gained access to NNSA networks last week.
"On Friday, July 18th, the exploitation of a Microsoft SharePoint zero-day vulnerability began affecting the Department of Energy, including the NNSA," Department of Energy Press Secretary Ben Dietderich told BleepingComputer. "The Department was minimally impacted due to its widespread use of the Microsoft M365 cloud and very capable cybersecurity systems."
Dietderich added that only "a very small number of systems were impacted" and that "all impacted systems are being restored."
As first reported by Bloomberg, sources within the agency also noted that there's no evidence of sensitive or classified information compromised in the breach.
The APT29 Russian state-sponsored threat group, the hacking division of the Russian Foreign Intelligence Service (SVR), also breached the U.S. nuclear weapons agency in 2019 using a trojanized SolarWinds Orion update.
Attacks linked to Chinese state hackers, over 400 servers breached
On Tuesday, Microsoft and Google linked the widespread attacks targeting a Microsoft SharePoint zero-day vulnerability chain (known as ToolShell) to Chinese state-sponsored hacking groups.
"Microsoft has observed two named Chinese nation-state actors, Linen Typhoon and Violet Typhoon exploiting these vulnerabilities targeting internet-facing SharePoint servers," Microsoft said.
"In addition, we have observed another China-based threat actor, tracked as Storm-2603, exploiting these vulnerabilities. Investigations into other actors also using these exploits are still ongoing."
Dutch cybersecurity firm Eye Security first detected the zero-day attacks on Friday, stating that at least 54 organizations had already been compromised, including national government entities and multinational companies.
Cybersecurity firm Check Point later revealed that it had spotted signs of exploitation going back to July 7th targeting dozens of government, telecommunications, and technology organizations in North America and Western Europe.
Weekend attacks compromised about 100 organisations
May hacker contest uncovered SharePoint weak spot
Initial Microsoft patch did not fully fix flaw
LONDON, July 22 (Reuters) - A security patch Microsoft (MSFT.O), opens new tab released this month failed to fully fix a critical flaw in the U.S. tech giant's SharePoint server software, opening the door to a sweeping global cyber espionage effort, a timeline reviewed by Reuters shows.
On Tuesday, a Microsoft spokesperson confirmed that its initial solution to the flaw, identified at a hacker competition in May, did not work, but added that it released further patches that resolved the issue.
It remains unclear who is behind the spy effort, which targeted about 100 organisations over the weekend, and is expected to spread as other hackers join the fray.
In a blog post Microsoft said two allegedly Chinese hacking groups, dubbed "Linen Typhoon" and "Violet Typhoon," were exploiting the weaknesses, along with a third, also based in China.
Microsoft and Alphabet's (GOOGL.O), opens new tab Google have said China-linked hackers were probably behind the first wave of hacks.
Chinese government-linked operatives are regularly implicated in cyberattacks, but Beijing routinely denies such hacking operations.
In an emailed statement, its embassy in Washington said China opposed all forms of cyberattacks, and "smearing others without solid evidence."
The vulnerability opening the way for the attack was first identified in May at a Berlin hacking competition, opens new tab organised by cybersecurity firm Trend Micro (4704.T), opens new tab that offered cash bounties for finding computer bugs in popular software.
It offered a $100,000 prize for so-called "zero-day" exploits that leverage previously undisclosed digital weaknesses that could be used against SharePoint, Microsoft's flagship document management and collaboration platform.
The U.S. National Nuclear Security Administration, charged with maintaining and designing the nation's cache of nuclear weapons, was among the agencies breached, Bloomberg News said on Tuesday, citing a person with knowledge of the matter.
forbes.com - Microsoft has confirmed that SharePoint Server is under mass attack and no patch is yet available — here’s what you need to know and how to mitigate the threat.
Microsoft Confirms CVE-2025-53770 SharePoint Server Attacks
It’s been quite the few weeks for security warnings, what with Amazon informing 220 million customers of Prime account attacks, and claims of a mass hack of Ring doorbells going viral. The first of those can be mitigated by basic security hygiene, and the latter appears to be a false alarm. The same cannot be said for CVE-2025-53770, a newly uncovered and confirmed attack against users of SharePoint Server which is currently undergoing mass exploitation on a global level, according to the Eye Research experts who discovered it. Microsoft, meanwhile, has admitted that not only is it “aware of active attacks” but, worryingly, “a patch is currently not available for this vulnerability.”
CVE-2025-53770, which is also being called ToolShell, is a critical vulnerability in on-premises SharePoint. The end result of which is the ability for attackers to gain access and control of said servers without authentication. If that sounds bad, it’s because it is. Very bad indeed.
“The risk is not theoretical,” the researchers warned, “attackers can execute code remotely, bypassing identity protections such as MFA or SSO.” Once they have, they can then “access all SharePoint content, system files, and configurations and move laterally across the Windows Domain.”
And then there’s the theft of cryptographic keys. That can enable an attacker to “impersonate users or services,” according to the report, “even after the server is patched.” So, even when a patch is eventually released, and I would expect an emergency update to arrive fairly quickly for this one, the problem isn’t solved. You will, it was explained, “need to rotate the secrets allowing all future tokens that can be created by the malicious actor to become invalid.”
And, of course, as SharePoint will often connect to other core services, including the likes of Outlook and Teams, oh and not forgetting OneDrive, the threat, if exploited, can and will lead to “data theft, password harvesting, and lateral movement across the network,” the researchers warned.
propublica.org - The Pentagon bans foreign citizens from accessing highly sensitive data, but Microsoft bypasses this by using engineers in China and elsewhere to remotely instruct American “escorts” who may lack expertise to identify malicious code.
Microsoft is using engineers in China to help maintain the Defense Department’s computer systems — with minimal supervision by U.S. personnel — leaving some of the nation’s most sensitive data vulnerable to hacking from its leading cyber adversary, a ProPublica investigation has found.
The arrangement, which was critical to Microsoft winning the federal government’s cloud computing business a decade ago, relies on U.S. citizens with security clearances to oversee the work and serve as a barrier against espionage and sabotage.
But these workers, known as “digital escorts,” often lack the technical expertise to police foreign engineers with far more advanced skills, ProPublica found. Some are former military personnel with little coding experience who are paid barely more than minimum wage for the work.
krebsonsecurity - Microsoft today released updates to fix at least 137 security vulnerabilities in its Windows operating systems and supported software. None of the weaknesses addressed this month are known to be actively exploited, but 14 of the flaws earned Microsoft’s most-dire “critical” rating, meaning they could be exploited to seize control over vulnerable Windows PCs with little or no help from users.
While not listed as critical, CVE-2025-49719 is a publicly disclosed information disclosure vulnerability, with all versions as far back as SQL Server 2016 receiving patches. Microsoft rates CVE-2025-49719 as less likely to be exploited, but the availability of proof-of-concept code for this flaw means its patch should probably be a priority for affected enterprises.
Mike Walters, co-founder of Action1, said CVE-2025-49719 can be exploited without authentication, and that many third-party applications depend on SQL server and the affected drivers — potentially introducing a supply-chain risk that extends beyond direct SQL Server users.
“The potential exposure of sensitive information makes this a high-priority concern for organizations handling valuable or regulated data,” Walters said. “The comprehensive nature of the affected versions, spanning multiple SQL Server releases from 2016 through 2022, indicates a fundamental issue in how SQL Server handles memory management and input validation.”
Adam Barnett at Rapid7 notes that today is the end of the road for SQL Server 2012, meaning there will be no future security patches even for critical vulnerabilities, even if you’re willing to pay Microsoft for the privilege.
Barnett also called attention to CVE-2025-47981, a vulnerability with a CVSS score of 9.8 (10 being the worst), a remote code execution bug in the way Windows servers and clients negotiate to discover mutually supported authentication mechanisms. This pre-authentication vulnerability affects any Windows client machine running Windows 10 1607 or above, and all current versions of Windows Server. Microsoft considers it more likely that attackers will exploit this flaw.
Microsoft also patched at least four critical, remote code execution flaws in Office (CVE-2025-49695, CVE-2025-49696, CVE-2025-49697, CVE-2025-49702). The first two are both rated by Microsoft as having a higher likelihood of exploitation, do not require user interaction, and can be triggered through the Preview Pane.
Two more high severity bugs include CVE-2025-49740 (CVSS 8.8) and CVE-2025-47178 (CVSS 8.0); the former is a weakness that could allow malicious files to bypass screening by Microsoft Defender SmartScreen, a built-in feature of Windows that tries to block untrusted downloads and malicious sites.
CVE-2025-47178 involves a remote code execution flaw in Microsoft Configuration Manager, an enterprise tool for managing, deploying, and securing computers, servers, and devices across a network. Ben Hopkins at Immersive Labs said this bug requires very low privileges to exploit, and that it is possible for a user or attacker with a read-only access role to exploit it.
“Exploiting this vulnerability allows an attacker to execute arbitrary SQL queries as the privileged SMS service account in Microsoft Configuration Manager,” Hopkins said. “This access can be used to manipulate deployments, push malicious software or scripts to all managed devices, alter configurations, steal sensitive data, and potentially escalate to full operating system code execution across the enterprise, giving the attacker broad control over the entire IT environment.”
Separately, Adobe has released security updates for a broad range of software, including After Effects, Adobe Audition, Illustrator, FrameMaker, and ColdFusion.
The SANS Internet Storm Center has a breakdown of each individual patch, indexed by severity. If you’re responsible for administering a number of Windows systems, it may be worth keeping an eye on AskWoody for the lowdown on any potentially wonky updates (considering the large number of vulnerabilities and Windows components addressed this month).
If you’re a Windows home user, please consider backing up your data and/or drive before installing any patches, and drop a note in the comments if you encounter any problems with these updates.
Today, Microsoft Threat Intelligence Center is excited to announce the release of RIFT, a tool designed to assist malware analysts automate the identification of attacker-written code within Rust binaries. Known for its efficiency, type safety, and robust memory safety, Rust has increasingly become a tool for creating malware, especially among financially motivated groups and nation-state entities. This shift has introduced new challenges for malware analysts as the unique characteristics of Rust binaries make static analysis more complex.
One of the primary challenges in reverse engineering malware developed with Rust lies in its layers of abstraction added through features such as memory safety and concurrency handling, making it more challenging to identify the behavior and intent of the malware. Compared to traditional languages, Rust binaries are often larger and more complex due to the incorporation of extensive library code. Consequently, reverse engineers must undertake the demanding task of distinguishing attacker-written code from standard library code, necessitating advanced expertise and specialized tools.
To address these pressing challenges, Microsoft Threat Intelligence Center has developed RIFT. RIFT underscores the growing need for specialized tools as cyber threat actors continue to leverage Rust’s features to evade detection and complicate analysis. The adoption of Rust by threat actors is a stark reminder of the ever-changing tactics employed in the cyber domain, and the increasing sophistication required to combat these threats effectively. In this blog post, we explore how threat actors are increasingly adopting Rust for malware development due to its versatility and how RIFT can be used to combat this threat by enhancing the efficiency and accuracy of Rust-based malware analysis.
An ongoing phishing campaign abuses a little‑known feature in Microsoft 365 called "Direct Send" to evade detection by email security and steal credentials.
Direct Send is a Microsoft 365 feature that allows on‑premises devices, applications, or cloud services to send emails through a tenant's smart host as if they originated from the organization's domain. It’s designed for use by printers, scanners, and other devices that need to send messages on behalf of the company.
However, the feature is a known security risk, as it doesn't require any authentication, allowing remote users to send internal‑looking emails from the company's domain.
Microsoft recommends that only advanced customers utilize the feature, as its safety depends on whether Microsoft 365 is configured correctly and the smart host is properly locked down..
"We recommend Direct Send only for advanced customers willing to take on the responsibilities of email server admins," explains Microsoft.
"You need to be familiar with setting up and following best practices for sending email over the internet. When correctly configured and managed, Direct Send is a secure and viable option. But customers run the risk of misconfiguration that disrupts mail flow or threatens the security of their communication."
The company has shared ways to disable the feature, which are explained later in the article, and says they are working on a way to deprecate the feature.
Microsoft announced it will expand the list of blocked attachments in Outlook Web and the new Outlook for Windows starting next month.
Microsoft announced it will expand the list of blocked attachments in Outlook Web and the new Outlook for Windows starting next month.
The company said on Monday in a Microsoft 365 Message Center update that Outlook will block .library-ms and .search-ms file types beginning in July.
"As part of our ongoing efforts to enhance security in Outlook Web and the New Outlook for Windows, we're updating the default list of blocked file types in OwaMailboxPolicy," Microsoft said. "Starting in early July 2025, the [.library-ms and .search-ms] file types will be added to the BlockedFileTypes list."
As AI and digital technologies advance, the European cyber threat landscape continues to evolve, presenting new challenges that require stronger partnerships and enhanced solutions. Ransomware groups and state-sponsored actors from Russia, China, Iran, and North Korea continue to grow in scope and sophistication, and European cyber protection cannot afford to stand still.
That is why, today, in Berlin, we are announcing a new Microsoft initiative to expand our longstanding work to help defend Europe’s cybersecurity. Implementing one of the five European Digital Commitments I shared in Brussels five weeks ago, we are launching a new European Security Program that adds to the company’s longstanding global Government Security Program.
This new program expands the geographic reach of our existing work and adds new elements that will become critical to Europe’s protection. It puts AI at the center of our work as a tool to protect traditional cybersecurity needs and strengthens our protection of digital and AI infrastructure.
We are launching the European Security Program with three new elements:
Microsoft and CrowdStrike are teaming up to create alignment across our individual threat actor taxonomies to help security professionals connect insights faster.
In today’s cyberthreat landscape, even seconds of delay can mean the difference between stopping a cyberattack or falling victim to ransomware. One major cause of delayed response is understanding threat actor attribution, which is often slowed by inaccurate or incomplete data as well as inconsistencies in naming across platforms. This, in turn, can reduce confidence, complicate analysis, and delay response. As outlined in the National Institute of Standards and Technology’s (NIST) guidance on threat sharing (SP 800-1501), aligning how we describe and categorize cyberthreats can improve understanding, coordination, and overall security posture.
That’s why we are excited to announce that Microsoft and CrowdStrike are teaming up to create alignment across our individual threat actor taxonomies. By mapping where our knowledge of these actors align, we will provide security professionals with the ability to connect insights faster and make decisions with greater confidence.
Read about Microsoft and Crowdstrike’s joint threat actor taxonomy
Names are how we make sense of the threat landscape and organize insights into known or likely cyberattacker behaviors. At Microsoft, we’ve published our own threat actor naming taxonomy to help researchers and defenders identify, share, and act on our threat intelligence, which is informed by the 84 trillion threat signals that we process daily. But the same actor that Microsoft refers to as Midnight Blizzard might be referred to as Cozy Bear, APT29, or UNC2452 by another vendor. Our mutual customers are always looking for clarity. Aligning the known commonalities among these actor names directly with peers helps to provide greater clarity and gives defenders a clearer path to action.
Introducing a collaborative reference guide to threat actors
Microsoft and CrowdStrike are publishing the first version of our joint threat actor mapping. It includes:
A list of common actors tracked by Microsoft and CrowdStrike mapped by their respective taxonomies.
Corresponding aliases from each group’s taxonomy.
This reference guide serves as a starting point, a way to translate across naming systems so defenders can work faster and more efficiently, especially in environments where insights from multiple vendors are in play. This reference guide helps to:
Improve confidence in threat actor identification.
Streamline correlation across platforms and reports.
Accelerate defender action in the face of active cyberthreats.
This effort is not about creating a single naming standard. Rather, it’s meant to help our customers and the broader security community align intelligence more easily, respond faster, and stay ahead of threat actors.
Microsoft Threat Intelligence has discovered a cluster of worldwide cloud abuse activity conducted by a threat actor we track as Void Blizzard, who we assess with high confidence is Russia-affiliated and has been active since at least April 2024. Void Blizzard’s cyberespionage operations tend to be highly targeted at specific organizations of interest to Russia, including in government, defense, transportation, media, non-governmental organizations (NGOs), and healthcare sectors primarily in Europe and North America.
Microsoft’s head of security for AI, Neta Haiby, accidentally revealed confidential messages about Walmart’s use of Microsoft’s AI tools during a Build talk that was disrupted by protesters.
The Build livestream was muted and the camera pointed down, but the session resumed moments later after the protesters were escorted out. In the aftermath, Haiby then accidentally switched to Microsoft Teams while sharing her screen, revealing confidential internal messages about Walmart’s upcoming use of Microsoft’s Entra and AI gateway services.
Haiby was co-hosting a Build session on best security practices for AI, alongside Sarah Bird, Microsoft’s head of responsible AI, when two former Microsoft employees disrupted the talk to protest against the company’s cloud contracts with the Israeli government.
“Sarah, you are whitewashing the crimes of Microsoft in Palestine, how dare you talk about responsible AI when Microsoft is fueling the genocide in Palestine,” shouted Hossam Nasr, an organizer with the protest group No Azure for Apartheid, and a former Microsoft employee who was fired for holding a vigil outside Microsoft’s headquarters for Palestinians killed in Gaza.
Walmart is one of Microsoft’s biggest corporate customers, and already uses the company’s Azure OpenAI service for some of its AI work. “Walmart is ready to rock and roll with Entra Web and AI Gateway,” says one of Microsoft’s cloud solution architects in the Teams messages. The chat session also quoted a Walmart AI engineer, saying: “Microsoft is WAY ahead of Google with AI security. We are excited to go down this path with you.”
La Digital Crimes Unit (DCU) de Microsoft, en collaboration avec des partenaires internationaux, s’attaque à l’un des principaux outils utilisés pour dérober massivement des données sensibles, qu’elles soient personnelles ou professionnelles, à des fines cybercriminelles. Le mardi 13 mai, la DCU de Microsoft a engagé une action en justice contre Lumma Stealer (« Lumma »), un malware spécialisé dans le vol d’informations, largement utilisé par des centaines d’acteurs de la menace cyber. Lumma vole des mots de passe, des cartes de crédit, des comptes bancaires et des portefeuilles de cryptomonnaies. Cet outil a permis à des criminels de bloquer des établissements scolaires afin de récupérer une rançon, de vider des comptes bancaires et de perturber des services essentiels.
Grâce à une décision de justice rendue par le tribunal fédéral du district nord de la Géorgie, la Digital Crimes Unit (DCU) de Microsoft a procédé à la saisie et à la mise hors ligne d’environ 2 300 domaines malveillants, qui constituaient l’infrastructure centrale de Lumma. Parallèlement, le département de la Justice américain (DOJ) a démantelé la structure de commande principale du malware et perturbé les places de marché où l’outil était vendu à d’autres cybercriminels. Europol, via son Centre européen de lutte contre la cybercriminalité (EC3), ainsi que le Centre de lutte contre la cybercriminalité du Japon (JC3), ont contribué à la suspension de l’infrastructure locale de Lumma.
