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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…
Unknown threat actors breached the TeamUpdraft website on 17-18 October 2026 and likely accessed its customer database, which holds connection keys for UpdraftCentral, UpdraftVault and UpdraftClone. Patchstack observed an attacker holding valid UpdraftCentral dashboard keys issuing signed commands to install backdoor plugins on connected …
Google warns that Armory Castle, a suspected PRC state-sponsored espionage actor, exploited the critical BeyondTrust Remote Support vulnerability CVE-2026-102764 (CVSS 9.3) in August 2026, well before BeyondTrust disclosed it on October 15. The actor escalated privileges to root and established persistent access on compromised appliances.…
F5 Labs, using Efflux sensor telemetry, analyzed December 2025 exploitation of React2Shell (CVE-2025-55182), a CVSS 10.0 unsafe deserialization RCE in React Server Components. It was disclosed on 3 December 2025 and rose to second place among the most exploited CVEs, behind only CVE-2017-9841. Within days of disclosure, actors moved from …
Multiple ransomware groups, including Qilin and INC, are exploiting CVE-2026-0257, an authentication bypass in Palo Alto Networks PAN-OS GlobalProtect portals and gateways. Unit 42 has been investigating intrusions since early June across many sectors, including finance, healthcare and manufacturing. The flaw was patched on May 13 and ini…
Palo Alto Networks Unit 42 reports active exploitation of CVE-2026-0257, an authentication bypass in the portal and gateway components of PAN-OS GlobalProtect. The flaw lets unauthorized attackers circumvent security controls and open VPN connections. The October 19 update says Unit 42 continues to see exploitation attempts by ransomware …
Group-IB research describes a widespread campaign by an operator tracked as k0t that targets FortiGate, FortiWeb and Palo Alto GlobalProtect appliances to steal credentials, persist and exfiltrate corporate data. More than 70,000 exposed credentials were identified across network-device records, LDAP dumps and other artifacts. Many FortiG…
GreyNoise reports that on 31 August 2026 a likely Russian-speaking malicious cyber actor used 45.142.193.132 and AI to develop, test and deploy exploits for PaperCut NG/MF (CVE-2026-81578 and CVE-2026-82078). Using hundreds of AI agents built on OpenAI's Codex harness, a DeepSeek model and public offensive security tools, the actor compro…
Cloudflare published defensive guidance following the disclosure of actively exploited Citrix NetScaler vulnerabilities. CVE-2026-88771 allows unauthenticated command execution on affected appliances, including in the default configuration. CVE-2026-88772 affects configurations using DTLS. Citrix's September 27, 2026 bulletin reported obs…
Mandiant and GTIG attribute exploitation of the critical BeyondTrust Remote Support zero-day CVE-2026-102764 to Armory Castle (formerly tracked as UNC5221), a likely Chinese government-backed espionage group. BeyondTrust dates the first known exploitation to Aug. 29 and says it detected and contained the activity Sept. 28. Only a small nu…
CISA, the FBI, the U.S. Secret Service and international partners issued a joint advisory on SafePay ransomware. The group has been highly active since August 2024 and has compromised roughly 600 organizations across multiple critical infrastructure sectors in the Americas, Europe and Australia. The FBI describes it as one of 2026's most …
Microsoft Threat Intelligence reports active exploitation of CVE-2026-73570, a command injection flaw in Zimbra Collaboration Suite that allows unauthenticated, zero-click compromise of internet-facing email servers. Attackers deployed webshells, escalated privileges, harvested authentication secrets and staged mailbox data across organiz…
SOCRadar's Threat Research Unit (STRU) found open directories on 45.227.254.43 in late September 2026. They led to six more adversary servers tied to INC Ransom and The Gentlemen affiliates. The servers held 8,257 AI messages across 133 sessions, source code, stolen credentials, victim workspaces and 46 victim-specific INC encryptor build…
Qilin and Settra ransomware groups are actively exploiting CVE-2026-0257, an authentication bypass in PAN-OS GlobalProtect and Prisma Access disclosed in May 2026, according to ReliaQuest. Because access arrives through the victim's own VPN, it can resemble legitimate remote work and go unnoticed until credential theft, lateral movement, …
GreyNoise reports that a single malicious cyber actor, tracked since 7 May 2026, is a suspected Chinese speaker working in UTC+8 and is the same as or related to Red Heron (reported by Acronis), based on the shared C2 domain, malware family, Gitea exploitation and other TTPs. The actor exploited the wp2shell WordPress chain (CVE-2026-6303…
A joint StopRansomware advisory (AA26-293A) from CISA, the FBI, the USSS, Germany's Landeskriminalamt Rheinland-Pfalz, the UK's National Crime Agency and the North West Regional Organised Crime Unit details SafePay ransomware activity observed through August 2026 (cisa.gov). The group has been active since August 2024 and has compromised …
