The Microsoft 365 Admin Portal is being abused to send sextortion emails, making the emails appear trustworthy and bypassing email security platforms.

Threat actors have been exploiting a vulnerability in the Roundcube Webmail client to target government organizations in the Commonwealth of Independent States (CIS) region, the successor of the former Soviet Union.

1 bug, $50,000+ in bounties, how Zendesk intentionally left a backdoor in hundreds of Fortune 500 companies - zendesk.md

Many spammers have elected to attack web pages and mail servers of legitimate organizations, so they may use these “pirated” resources to send unsolicited email.

Censys warns that over 1.5 million Exim mail transfer agent (MTA) instances are unpatched against a critical vulnerability that lets threat actors bypass security filters.

A researcher has found a way to impersonate Microsoft corporate email accounts, which could make phishing attacks harder to spot.

Last week, a security researcher sent me 122GB of data scraped out of thousands of Telegram channels. It contained 1.7k files with 2B lines and 361M unique email addresses of which 151M had never been seen in HIBP before. Alongside those addresses were passwords and, in many cases, the website the data pertains to. I've loaded it into Have I Been Pwned (HIBP) today because there's a huge amount of previously unseen email addresses and based on all the checks I've done, it's legitimate data. That's the high-level overview, now here are the details:

There are two types of malicious documents that are distributed via email recently: those exploiting equation editor and those including external link URLs. This post will describe the infection flow of the DanaBot malware that is distributed through documents containing external links, the latter method, as well as the evidence and detection process with the AhnLab EDR product’s diagram. Figure 1 shows the content of a spam email with a Word document attached that contains an external link. As you can see, it is a sophisticatedly disguised email pretending to be a job application form to deceive the recipient. The attached file (.docx) is a Word document that contains an external link.

CISA publicly released an emergency directive issued to federal agencies earlier this month, detailing how a breach at Microsoft could have affected the government.

Anyone who has had to deal with HTML emails on a technical level has probably reached the point where they wanted to quit their job or just set fire to all the mail clients due to their inconsistent implementations. But HTML emails are not just a source of frustration, they can also be a serious security risk.

Microsoft needs a security culture overhaul, a US report concludes. The software giant could have prevented a cloud email hack in 2023.

NCSC says generative AI tools will soon allow amateur cybercriminals to launch sophisticated phishing attacks

Senior execs' emails accessed in network breach that wasn't caught for 2 months.

Beware of phishing emails with invoice-themed attachments! Attackers are using an old Office vulnerability (CVE-2017-11882) to spread the Agent Tesla

The Winter Vivern Russian hacking group has been exploiting a Roundcube Webmail zero-day since at least October 11 to attack European government entities and think tanks.

A social engineering phone call lends authenticity to the attacker’s malicious email

A US cybersecurity advisory panel will investigate risks in cloud computing, including Microsoft Corp.’s role in a recent breach of government officials’ email accounts by suspected Chinese hackers, according to two people familiar with the matter.
The Cyber Safety Review Board, which was created by the Biden administration to investigate major cybersecurity events, will focus on risks to cloud computing infrastructure broadly, including identity and authentication management, and will examine all relevant cloud service providers, according to a Department of Homeland Security official. The issue was brought into focus by the breach of Microsoft’s email systems, the official said. Both people asked not to be named so they could discuss sensitive information.

Over the past few days, we have seen phishing attacks that use a combination of compromised Microsoft 365 accounts and .rpmsg encrypted emails to deliver the phishing message.

One of the most expensive aspects of any cybercriminal operation is the time and effort it takes to create large numbers of new throwaway email accounts. Now a new service offers to help dramatically cut costs associated with large-scale spam…

Barracuda Networks's Status Page - Barracuda identified a vulnerability (CVE-2023-2868) in our Email Security Gateway appliance (ESG) on May 19, 2023..