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.
A new Linux malware named Koske may have been developed with artificial intelligence and is using seemingly benign JPEG images of panda bears to deploy malware directly into system memory. [...]
A threat actor called EncryptHub has compromised a game on Steam to distribute info-stealing malware to unsuspecting users downloading the title. [...]
The popular NPM package 'is' has been compromised in a supply chain attack that injected backdoor malware, giving attackers full access to compromised devices. [...]
The Lumma infostealer malware operation is gradually resuming activities following a massive law enforcement operation in May, which resulted in the seizure of 2,300 domains and parts of its infrastructure. [...]
A new variant of the banking trojan 'Coyote' has begun abusing a Windows accessibility feature, Microsoft's UI Automation framework, to identify which banking and cryptocurrency exchange sites are accessed on the device for potential credential theft. [...]