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Microsoft's October 2026 Patch Tuesday is a record release of roughly 1,415 new CVEs, the first four-digit volume ever, larger than any previous full year of Microsoft patches. Only one flaw is under active attack: CVE-2026-96951, a Windows Shell security feature bypass that evades Mark of the Web (MotW) protections. Two others are public…
This SentinelOne weekly roundup (Week 41, 2026) covers law enforcement actions, a phishing campaign and an actively exploited vulnerability. The most urgent item is CVE-2026-21589, a critical (CVSS 9.3) unauthenticated arbitrary file access flaw in Atlassian Data Center products. Exploitation attempts began about two hours after a public …
Dutch authorities arrested a 24-year-old, reportedly Pepijn van der Stap (alias "Umbreon"), around Sept. 16, 2026 on suspicion of aiding data thefts and extortions by ShinyHunters. Van der Stap was previously convicted in 2023 for data theft and extortion. Days after the arrest, remaining ShinyHunters members escalated, breaching the FBI …
This weekly recap covers several concurrent incidents. ConnectWise disabled seven application identities and suspended Cloud Backup after unknown actors abused them to compromise Microsoft 365 tenants. China-nexus Armory Castle (UNC5221 / Warp Panda) exploited BeyondTrust Remote Support flaw CVE-2026-102764 (CVSS 9.3) as a zero-day in lat…
