The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
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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.
Russian-aligned TAG-110 uses custom tools to spy on governments, human rights groups and educational institutions in Europe and Asia
New Linux malware WolfsBane and FireWood have been linked to Gelsemium APT, a cyber-espionage group targeting critical systems
Group-IB revealed key differences in VietCredCare and DuckTail infostealer malware targeting Facebook Business accounts
Spreading malware via Telegram channels allows threat actors to bypass traditional detection mechanisms and reach a broad, unsuspecting audience
Switzerland’s National Cyber Security Centre has warned of a new QR code scam in fake MeteoSwiss letters spreading Android malware
Proofpoint researchers have observed the growing use of the ClickFix social engineering tactic, which lures people into running malicious content on their computer
BeaverTail malware has been used to target tech job seekers through fake recruiters, Palo Alto Networks’ Unit 42 has found