Latest cybersecurity reporting from selected sources.

On July 2, 2026, CISA added CVE-2026-45659, a SharePoint Server RCE, to its Known Exploited Vulnerabilities catalog with a two-day patch deadline. Storm-2603 is using it to stage Warlock ransomware, living off the land the whole way. Here is why it matters, plus a free 12-rule Sigma pack to hunt it.

CISA confirms BlueHammer (CVE-2026-33825) is now used in ransomware attacks to gain SYSTEM privileges through Microsoft Defender. BlueHammer, tracked as CVE-2026-33825, has moved from proof-of-concept noise to real ransomware attacks in the wild, the US CISA confirms. BlueHammer allows attackers to escalate privileges locally in Microsoft Defender. The vulnerability, along with two other zero-days dubbed […]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urged government agencies to apply patches for two security flaws impacting Synacor Zimbra Collaboration Suite (ZCS) and Microsoft Office SharePoint, stating they have been actively exploited in the wild

Hackers are actively exploiting the CVE-2026-1731 vulnerability in the BeyondTrust Remote Support product, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) warns. [...]

Also: Spanish Hacker Granted Russian Asylum, Microsoft Patches Zero-DaysThis week, a CISA warning, Nest footage in Nancy Guthrie case, Signal phishing. Spanish hacker, Russian asylum. Spanish ministry services offline. BYOVD ransomware. The Conduent breach hit Volvo. Microsoft patched zero-days. ZeroDayRAT targeted devices. The SmarterMail breach. Another Fortinet flaw.

The Cybersecurity & Infrastructure Security Agency (CISA) in the U.S. has issued a warning about CVE-2026-24423, an unauthenticated remote code execution (RCE) flaw in SmarterMail that is used in ransomware attacks. [...]

US government agencies are warning that the Akira ransomware operation has been spotted encrypting Nutanix AHV virtual machines in attacks.  [...]

CISA, the FBI, the NSA, and international cybersecurity agencies are calling on organizations and DNS providers to mitigate the "Fast Flux" cybercrime evasion technique used by state-sponsored threat actors and ransomware gangs. [...]

The US Cybersecurity and Infrastructure Security Agency added flaws in Fortinet and a popular GitHub Action to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a critical security flaw impacting Jenkins to its Known Exploited Vulnerabilities (KEV) catalog, following its exploitation in ransomware attacks

​CISA has added a critical Jenkins vulnerability that can be exploited to gain remote code execution to its catalog of security bugs, warning that it's actively exploited in attacks. [...]

CISA has ordered U.S. Federal Civilian Executive Branch (FCEB) agencies to secure their servers against a VMware ESXi authentication bypass vulnerability exploited in ransomware attacks. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a high-severity Windows vulnerability abused in ransomware attacks as a zero-day to its catalog of actively exploited security bugs. [...]

In the first year alone, that's saved us all a lot of money and woe RSAC As ransomware gangs step up their attacks against healthcare, schools, and other US critical infrastructure, CISA is ramping up a program to help these organizations fix flaws exploited by extortionists in the first place.…

ALSO: CISA warns Ivanti vuln mitigations might not work, SAML hijack doesn't need ADFS, and crit vulns Infosec in brief The infamous LockBit ransomware gang has been busy in the ten days since an international law enforcement operation took down many of its systems. But despite its posturing, the gang might have suffered more than it's letting on.…

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a now-patched security flaw impacting Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) software to its Known Exploited Vulnerabilities (KEV) catalog, following reports that it's being likely exploited in Akira ransomware attacks

Patch or isolate now: Organizations in every sector run the risk of hemorrhaging data as opportunistic attacks from LockBit ransomware and others grow.

The threat actors behind the Rhysida ransomware engage in opportunistic attacks targeting organizations spanning various industry sectors

The group's use of malware that forces Windows computers to reboot into Safe Mode before encrypting files is noteworthy, advisory says.

The bug allowed cyber-criminals to remotely execute malicious code without authentication credentials