Latest cybersecurity reporting from selected sources.

A China-based threat actor known for deploying Medusa ransomware has been linked to the weaponization of a combination of zero-day and N-day vulnerabilities to orchestrate "high-velocity" attacks and break into susceptible internet-facing systems

Microsoft says that Storm-1175, a China-based financially motivated cybercriminal group known for deploying Medusa ransomware payloads, has been deploying n-day and zero-day exploits in high-velocity attacks. [...]

Of the 90 zero-days GTIG tracked in 2025, 43 hit enterprise tech Zero-day exploitation targeting enterprise tech products reached an all-time high last year, with China-linked cyber-espionage groups remaining the most prolific state-backed users, according to Google.…

A maximum severity security vulnerability in Dell RecoverPoint for Virtual Machines has been exploited as a zero-day by a suspected China-nexus threat cluster dubbed UNC6201 since mid-2024, according to a new report from Google Mandiant and Google Threat Intelligence Group (GTIG)

Mandiant reveals campaign featuring exploit of a CVSS 10.0 CVE in Dell RecoverPoint for Virtual Machines

After detecting a zero-day attack, the country's effective response was attributed to the tight relationship between its government and private industry.

Full scale of infections remains 'unknown' China-linked attackers exploited a maximum-severity hardcoded-credential bug in Dell RecoverPoint for Virtual Machines as a zero-day since at least mid-2024. It's all part of a long-running effort to backdoor infected machines for long-term access, according to Google's Mandiant incident response team.…

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. [...]

An advanced threat actor tracked as UAT-8837 and believed to be linked to China has been focusing on critical infrastructure systems in North America, gaining access by exploiting both known and zero-day vulnerabilities. [...]

A threat actor likely aligned with China has been observed targeting critical infrastructure sectors in North America since at least last year

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.

The April/May zero-day exploitations of Ivanti's mobile device management platform meant unprecedented pwning of thousands of orgs by a Chinese APT — and history will probably repeat itself.

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.

Cisco has alerted users of a maximum-severity zero-day flaw in Cisco AsyncOS software that has been actively exploited by a China-nexus advanced persistent threat (APT) actor codenamed UAT-9686 in attacks targeting Cisco Secure Email Gateway and Cisco Secure Email and Web Manager

No timeline for a patch Suspected Chinese-government-linked threat actors have been battering a maximum-severity Cisco AsyncOS zero-day vulnerability in some Secure Email Gateway (SEG) and Secure Email and Web Manager (SEWM) appliances for nearly a month, and there's no timeline for a fix.…

A critical security issue in a popular endpoint manager (CVE-2025-61932) allowed Chinese state-sponsored attackers to backdoor Japanese businesses.

China-linked cyber-espionage actors tracked as 'Bronze Butler' (Tick) exploited a Motex Lanscope Endpoint Manager vulnerability as a zero-day to deploy an updated version of their Gokcpdoor malware. [...]

The exploitation of a recently disclosed critical security flaw in Motex Lanscope Endpoint Manager has been attributed to a cyber espionage group known as Tick

A China-linked hacking group is exploiting a Windows zero-day in attacks targeting European diplomats in Hungary, Belgium, and other European nations. [...]