Cybersecurity and Infrastructure Security Agency (CISA)

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A November 13, 2025, a Cybersecurity Advisory warned that new activity by the Akira ransomware variant “presents an imminent threat to critical infrastructure.” The Advisory was jointly issued by four U.S. agencies, the Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency, the Department of Defense Cyber Crime Center, and the Department of…

Recently, the National Security Agency (NSA), Cybersecurity and Infrastructure Security Agency (CISA), Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC), and Canadian Centre for Cyber Security (Cyber Centre) issued guidance outlining security best practices for administrators on hardening on-premises Exchange servers.

The guidance emphasizes that “the threat to Exchange servers remains persistent…and should be…

Threat actors continue to exploit ToolShell to gain unauthorized access to on-premises SharePoint servers. On August 6, 2025, the Cybersecurity and Infrastructure Security Agency (CISA) released a malware analysis report after analyzing six files “including two Dynamic Link-Library (.DLL), one cryptographic key stealer, and three web shells. Cyber threat actors could leverage this malware…

Microsoft has confirmed that vulnerabilities in its on-premises SharePoint Server installations, a network spoofing vulnerability (CVE-202549706), and a remote code execution vulnerability (CVE-2025-49704) are being actively exploited despite releasing an emergency patch on July 20, 2025. The vulnerabilities allow threat actors to “execute code remotely, bypass identity protections such as multi-factor authentication and access system…

The Cybersecurity and Infrastructure Security Agency (CISA) confirmed on Tuesday, March 11, 2025, that the Multi-State Information Sharing and Analysis Center (MS-ISAC) will lose its federal funding and cooperative agreement with the Center for Internet Security. MS-ISAC’s mission “is to improve the overall cybersecurity posture of U.S. State, Local, Tribal, and Territorial (SLTT) government organizations…