Latest cybersecurity reporting from selected sources.

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 […]

Threat hunters are warning that the cybercriminal operation known as VECT 2.0 acts more like a wiper than a ransomware due to a critical flaw in its encryption implementation across Windows, Linux, and ESXi variants that renders recovery impossible even for the threat actors

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

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.

Operation Cronos didn’t kill LockBit – it just came back meaner Trend Micro has sounded the alarm over the new LockBit 5.0 ransomware strain, which it warns is "significantly more dangerous" than past versions due to its newfound ability to simultaneously target Windows, Linux, and VMware ESXi environments. …

Microsoft warns that a threat actor tracked as Storm-0501 has evolved its operations, shifting away from encrypting devices with ransomware to focusing on cloud-based encryption, data theft, and extortion. [...]

Defunct Ransomware Group's Diaspora Includes Hackers With Focus on Microsoft TeamsBased on intelligence gleaned from the leak of Black Basta ransomware messages, researchers are warning organizations to beware phishing attacks launched via Microsoft partner domains and via Teams, as well as the targeting of personal Google accounts accessed via corporate devices.

Also, Blue Shield Breach Exposes 4.7M, Cyberattack Disrupts City Systems in TexasThis week, Cookie Bite bypasses MFA in Azure Entra ID, Microsoft fixed RDP Freezes, a ransomware attack in Catalonia, Blue Shield exposed data to Google, a cyberattack disrupted city systems in Texas, South Korean telecom breach exposed USIM data and a warning about North Korean IT deepfakes.

Domain Controllers Commandeered to Distribute Malware, Warns MicrosoftRansomware hackers are hitting up Active Directory domain controllers to boost privileges within compromised networks, warns Microsoft. Nearly eight out of every 10 human-operated cyberattacks involves a breached domain controller. Securing the servers is a challenge.

Tech Giant Says Threat Actors Are Exploiting a Flaw in Widely-Targeted Windows ToolRansomware threat actors are exploiting a zero-day vulnerability discovered in a highly targeted Windows logging system tool in a campaign in part targeting U.S. IT and real estate sectors, Microsoft confirmed in a Tuesday blog post urging customers to apply available patches.

Also: Honeypot 'Jinn Ransomware,' Patch Tuesday and At Risk SectorsThis week, Researchers say Fortinet didn't fully patch FortiJump, "Jinn Ransomware" was a set up, Microsoft Patch Tuesday and a Moody's warning over at-risk sectors. Also, a debt servicing firm breach, a DemandScience breach and a malicious tool targetint GitHub users.

Also: Internet Archive Limps Back Online, Beware Kerbertoasing and Passkey TakeupThis week, Brazilian police arrested USDoD, Internet Archive is recovering, a Microsoft warning over Kerberoasting and of mounting phishing attacks, Google touted memory safety efforts, Volkswagen said no harm after ransomware attack, and Amazon reported over 175 million customers using passkeys.

Microsoft warns that ransomware group Storm-0501 has shifted from buying initial access to leveraging weak credentials to gain on-premises access before moving laterally to the cloud.

Microsoft warns that ransomware threat actor Storm-0501 has recently switched tactics and now targets hybrid cloud environments, expanding its strategy to compromise all victim assets. [...]

Defenders beware: Ransomware, data theft, extortion, and backdoors on Storm-0501's agenda Microsoft's latest threat intelligence blog issues a warning to all organizations about Storm-0501's recent shift in tactics, targeting, and backdooring hybrid cloud environments.…

Microsoft has revealed that a financially motivated threat actor has been observed using a ransomware strain called INC for the first time to target the healthcare sector in the U.S

New Reports and Joint Advisory Warn of Growing Cybersecurity Threats Linked to IranA joint advisory from the FBI and Cybersecurity and Infrastructure Security Agency, as well as reports published Wednesday by Microsoft and the Google-owned cybersecurity firm Mandiant, are all warning of emerging cybersecurity threats associated with the Iranian regime.

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. [...]

Also: FBI Warning About Androxgh0st; eBay Pays a $3 Million Fine for CyberstalkingThis week, Microsoft expanded plans to store EU citizens' data locally, shipping-themed phishing spam is a threat, the British Library overcame a ransomware setback, the FBI warned of Androxgh0st malware, Remcos RAT targeted South Korea, and eBay was fined $3 million for a cyberstalking campaign.

Microsoft has warned of a new wave of CACTUS ransomware attacks that leverage malvertising lures to deploy DanaBot as an initial access vector