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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has revealed that an unnamed federal civilian agency's Cisco Firepower device running Adaptive Security Appliance (ASA) software was compromised in September 2025 with a new malware called FIRESTARTER
Latest in long-running pwning of Cisco kit found in mystery Fed agency A US federal agency was successfully targeted by a previously unknown backdoor malware called Firestarter, according to CISA cybersnoops and their UK counterparts – neither of which disclosed the agency's name.…
CISA and NCSC co-released a Malware Analysis Report today on a Cisco ASA/Firepower backdoor that patching does not remove. Here is what it does, why Sigma will not save you, and what to do this week.
Chinese-Linked Malware Campaign Targets Critical Environments With Weak MonitoringU.S. and Canadian cyber authorities say Chinese state-backed actors used a backdoor dubbed BRICKSTORM to maintain long-term access into critical infrastructure, exploiting VMware environments to exfiltrate credentials and evade detection through encrypted covert channels.
CISA Publishes Anatomy of Advanced Ivanti VPN MalwareHackers using Trojans connected to a malware family deployed by Chinese nation-state hackers are actively exploiting a now-patched vulnerability in Ivanti Connect Secure appliances. The malware "contains capabilities of a rootkit, dropper, backdoor, bootkit, proxy and tunneler."
PLUS: Chinese chipmaker Nexperia attacked; A Microsoft-signed backdoor; CISA starts scanning your malware; and more Infosec in brief US Congress nearly killed a reauthorization of FISA Section 702 last week over concerns that it would continue to allow warrantless surveillance of Americans, but an amendment to require a warrant failed to pass.…
The U.S. Cybersecurity & Infrastructure Security Agency (CISA) has discovered a new backdoor malware named 'Whirlpool' used in attacks on compromised Barracuda Email Security Gateway (ESG) devices. [...]
Chinese threat actor used malware in attacks
CISA says new malware known as Submarine was used to backdoor Barracuda ESG (Email Security Gateway) appliances by exploiting a now-patched zero-day bug. [...]
'Daxin' malware creates backdoors and may have been used since 2013 The United States' Cybersecurity and Infrastructure Security Agency (CISA), working with security vendor Symantec, has found an extremely sophisticated network attack tool that can invisibly create backdoors, has been plausibly linked to Chinese actors, and may have been in use since 2013.…