The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
Search across headline titles and summaries.
Background for this topic.
Malware is software intentionally created or modified to perform unauthorized or harmful actions on a computer, device, or network. The term covers distinct families and functions, including viruses, worms, trojans, spyware, botnet clients, and ransomware; a single sample may combine several capabilities. Its behavior—not its label—determines the security concern: it may execute code, persist, alter or encrypt data, steal credentials, or provide unauthorized remote access.
For practitioners, malware reporting is most useful when it identifies the family or tool conservatively and provides evidence such as affected platforms, samples, infrastructure, or observed behavior. Defenses include promptly patching vulnerable software, restricting execution and privileges, monitoring endpoints and networks, maintaining tested backups, and isolating suspected systems for analysis. Detection should use behavior and verified indicators rather than names alone, since variants change. If malware processes personal or regulated data, investigations should also address privacy, evidence preservation, and applicable reporting obligations.
Weekly headline count for the current query.
Microsoft says GigaWiper combines at least 3 malware families into one modular tool
Dog-eat-dog world for credential-stealing attackers
Unit 42 says attackers are posing as helpdesk staff and persuading employees to hand over remote control before dropping EtherRAT trojan
200+ C2 servers linked to StealC and Amadey shut down
Infosec buffs say Windows users could have been infected with a nasty trojan, while Mac users got off lightly
Custom malware routed communications through legitimate Microsoft services, making malicious activity look like routine corporate collaboration
Shai-Hulud worm exploited exactly this. Better late than never, says everyone except the malware authors
TeamPCP? Or copycat malware dev?
'Thousands' of US victims, including 12+ machines owned and operated by Redmond
Attackers stole a limited amount of internal credential material after malware hidden in poisoned packages reached two staff machines
Where it’s been well and truly forked, seemingly without Microsoft’s code locker noticing
All your compromised credentials are belong to us now instead of the other gang
Mini Shai-Hulud caught spreading credential-stealing malware
Mini Shai-Hulud caught spreading credential-stealing malware The wave of supply chain attacks aimed at security and developer tools has washed up more victims, namely SAP and Intercom npm packages, plus the lightning PyPI package.…
Yet another reason not to feast on OpenClaw Thirty ClawHub skills published by a single author are silently co-opting AI agents and creating a mass cryptocurrency mining swarm – without any malware or user consent.…
Coming in cold with custom Snow malware
Coming in cold with custom Snow malware A previously unknown threat group using tried-and-tested social engineering tactics - Microsoft Teams chat invitations and helpdesk staff impersonation - is also using custom malware in its data-stealing attacks, according to Google's Threat Intelligence Group.…
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.…
FAST16 could be the first cyberweapon, and its effects could be with us today
FAST16 could be the first cyberweapon, and its effects could be with us today Black Hat Asia Infosec outfit SentinelOne found malware that tries to induce errors in engineering and physics simulation software and therefore represents an attempt at sabotage, and suggests it was created years before the Stuxnet worm that aimed to destroy Iran’s uranium enrichment centrifuges.…