Fortinet diligently balances our commitment to the security of our customers and our culture of responsible transparency and commits to sharing information with that goal in mind. While efforts by threat actors to exploit known vulnerabilities are not new, recent Fortinet investigations have discovered a post exploitation technique used by a threat actor. This blog offers analysis of that finding to help our customers make informed decisions.
Microsoft Threat Intelligence Center (MSTIC) and Microsoft Security Response Center (MSRC) have discovered post-compromise exploitation of a zero-day elevation of privilege vulnerability in the Windows Common Log File System (CLFS) against a small number of targets. The targets include organizations in the information technology (IT) and real estate sectors of the United States, the financial sector in Venezuela, a Spanish software company, and the retail sector in Saudi Arabia. Microsoft released security updates to address the vulnerability, tracked as CVE-2025-29824, on April 8, 2025.
Even weirder: Why would Google give so many the "Featured" stamp for trustworthiness?
Google is hosting dozens of extensions in its Chrome Web Store that perform suspicious actions on the more than 4 million devices that have installed them and that their developers have taken pains to carefully conceal.
After the release of the Secure Annex ‘Monitor’ feature, I wanted to help evaluate a list of extensions an organization I was working with had configured for monitoring. Notifications when new changes occur is great, but in security, baselines are everything!
To cut down a list of 132 extensions in use, I identified a couple extensions that stuck out because they were ‘unlisted’ in the Chrome Web Store. Unlisted extensions are not indexed by search engines and do not show up when searching the Chrome Web Store. The only way to access the extension is by knowing the URL.
A self-contained AI system engineered for offensive cyber operations, Xanthorox AI, has surfaced on darknet forums and encrypted channels.
Introduced in late Q1 2025, it marks a shift in the threat landscape with its autonomous, modular structure designed to support large-scale, highly adaptive cyber-attacks.
Built entirely on private servers, Xanthorox avoids using public APIs or cloud services, significantly reducing its visibility and traceability.
A vulnerability impacting multiple ESET products has been exploited by an APT group to load malicious DLL libraries and silently deploy malware, Kaspersky reports.
The issue, tracked as CVE-2024-11859, is described as a DLL search order hijacking flaw that could be exploited by attackers with administrative privileges for arbitrary code execution.
A 20-year-old man believed to be a member of the cybercrime ring known as Scattered Spider has pleaded guilty to charges brought against him in Florida and California.
Noah Urban of Palm Coast, Florida, was arrested in January 2024 and charges against him were unsealed by US authorities in November 2024, when four others believed to be members of Scattered Spider were named.
The Russian hacking group known as Gamaredon, or “Shuckworm,” has been making headlines with its sophisticated cyberattacks targeting Western military missions. This group has evolved its tactics, techniques, and procedures (TTPs) to enhance stealth and effectiveness, transitioning from Visual Basic Script (VBS) to PowerShell-based tools. PowerShell is a task automation framework from Microsoft, often used by attackers to execute commands and scripts on Windows systems. This shift, as reported by Symantec, highlights their strategic move to obfuscate, or hide, payloads and leverage legitimate services for evasion. Gamaredon’s recent campaigns have notably involved the use of malicious removable drives, targeting Western military missions in Ukraine with .LNK files that initiate infections upon execution. These developments underscore the group’s persistent threat to geopolitical entities, particularly those related to the Ukrainian military.
The Office of the Comptroller of the Currency (OCC) today notified Congress of a major information security incident, as required by the Federal Information Security Modernization Act.
This finding is the result of internal and independent third-party reviews of OCC emails and email attachments that were subject to unauthorized access. On February 11, 2025, the OCC learned of unusual interactions between a system administrative account in its office automation environment and OCC user mailboxes. On February 12, the OCC confirmed the activity was unauthorized and immediately activated its incident response protocols which include initiating an independent third-party incident assessment and reporting the incident to the Cybersecurity and Infrastructure Security Agency. On February 12, the OCC disabled the compromised administrative accounts and confirmed that the unauthorized access had been terminated. The OCC provided public notice of the incident on February 26.
Medical testing services provider Laboratory Services Cooperative (LSC) is notifying 1.6 million individuals that their personal information was stolen in an October 2024 data breach.
As part of the cyberattack, which was identified on October 27, a threat actor accessed LSC’s network and accessed and exfiltrated certain files containing patient and employee information.
The hackers who posted the documents on Telegram said the attack was in response to alleged Moroccan 'harassment' of Algeria on social media platforms, pledging additional cyberattacks if Algerian sites were targeted.
China admitted in a secret meeting with U.S. officials that it conducted Volt Typhoon cyberattacks on U.S. infrastructure, WSJ reports.
China reportedly admitted in a secret meeting with U.S. officials that it carried out cyberattacks on U.S. infrastructure, linked to the Volt Typhoon campaign.
