Latest cybersecurity reporting from selected sources.

Also, 23andMe Breach Settlement, GitHub AI Flaw, Ubiquiti Patches Critical BugsThis week, hidden breaches, researchers exposed a GitHub AI agent flaw, an Ubiquiti critical flaw, a ColdFusion flaw, a growing Chinese ORB, U.K. government FortiBleed exposure, 23andMe victims get $46.75 million, 3.8 million affected by Medtronic breach and Cerner's 2025 victim count went up.

Unauthenticated Flaw Allows Full Router, Network TakeoverA hidden backdoor, disclosed by CERT/CC and found in multiple firmware versions made by Chinese manufacturer Tenda, bypasses authentication and could grant attackers administrative access. Researchers are reporting exploitation and an Nmap script is making vulnerable devices easier to identify.

Unauthenticated Flaw Allows Full Router, Network TakeoverA hidden backdoor, disclosed by CERT/CC and found in multiple firmware versions made by Chinese manufacturer Tenda, bypasses authentication and could grant attackers administrative access. Researchers are reporting exploitation and an Nmap script is making vulnerable devices easier to identify.

A China-linked threat cluster has been exploiting vulnerable Roundcube servers at U.S. and Canadian universities to steal credentials and deploy backdoor malware. [...]

A suspected China-aligned threat activity cluster has been observed exploiting Roundcube webmail software belonging to physics and engineering departments of U.S. and Canadian universities as part of a new campaign

Mythos Found ‘Tens of Thousands’ of Unpatched Flaws With Months to Fix ThemAnthropic CEO Dario Amodei warned that Claude Mythos has found tens of thousands of unpatched software vulnerabilities, with a six-to-12 month window before Chinese AI models catch up. The disclosure came alongside a major financial services push including an investor-backed firm and 10 new AI agents.

Also, HexDex Arrest, Black Axe Crackdown, LeRobot RCE FlawThis week, election threats resurfaced. A prolific hacker arrested. Black Axe network disrupted. China-linked disinformation targets Tibet. Exploited ScreenConnect and Windows flaws raise alarms. Minecraft gamers hit with stealer malware. A critical AI framework bug enables remote code execution.

Alleged Nation-State Hacker Being Held in Houston JailU.S. prosecutors allege 34-year-old Chinese national Xu Zewei operated under China’s Ministry of State Security to hack universities and firms during the pandemic, exploiting VPN and Exchange flaws and exfiltrating research data in a Silk Typhoon campaign.

Also, Eurail Breach, ChipSoft Hospital Disruptions, W3LL Phishing TakedownThis week, a "Raccoon"-linked actor hit help desks, Eurail exposed 308K users, Fortinet patched critical flaws, Pushpaganda scams, major data leaks hit healthcare and China, ransomware and phishing ops surged, and multiple breaches impacted firms and hospitals.

A critical security vulnerability impacting ShowDoc, a document management and collaboration service popular in China, has come under active exploitation in the wild

China's National Computer Network Emergency Response Technical Team (CNCERT) has issued a warning about the security stemming from the use of OpenClaw (formerly Clawdbot and Moltbot), an open-source and self-hosted autonomous artificial intelligence (AI) agent

A China-related attacker has exploited the vendor flaw since mid-2024, allowing it to move laterally, maintain persistent access, and deploy malware.

A suspected Chinese state-backed hacking group has been quietly exploiting a critical Dell security flaw in zero-day attacks that started in mid-2024. [...]

Threat actors affiliated with China have been attributed to a fresh set of cyber espionage campaigns targeting government and law enforcement agencies across Southeast Asia throughout 2025

A new threat actor called Amaranth Dragon, linked to APT41 state-sponsored Chinese operations, exploited the CVE-2025-8088 vulnerability in WinRAR in espionage attacks on government and law enforcement agencies. [...]

Google on Tuesday revealed that multiple threat actors, including nation-state adversaries and financially motivated groups, are exploiting a now-patched critical security flaw in RARLAB WinRAR to establish initial access and deploy a diverse array of payloads

Chinese Attackers Among Those Tied to Attempted Exploits of FortiSIEM AppliancesCritical vulnerabilities in edge devices are continuing to be discovered by security researchers and rapidly targeted by attackers. Lately, this includes a critical vulnerability in Fortinet's FortiSIEM appliances, which Chinese and other hackers began targeting just two days post-patch.

Cisco on Thursday released security updates for a maximum-severity security flaw impacting Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager, nearly a month after the company disclosed that it had been exploited as a zero-day by a China-nexus advanced persistent threat (APT) actor codenamed UAT-9686

Also: China-Linked APT Hijack Updates, Condé Nast Data Leaked, La Poste HitThis week, a Clop-linked vendor breach hit Korean Air, a China-linked APT hijacked software updates, a critical zero-day flaw remained unpatched, Condé Nast faced a data leak, La Poste was disrupted and Korean police extradited a malware operation suspect.

Cisco Talos Attributes Campaign to UAT-9686Likely Chinese nation-state hackers are exploiting an unpatched flaw in Cisco email appliances as part of an ongoing campaign to gain persistent access. Hackers have been exploiting since mid-November a zero-day in the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager.