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.
Google reveals North Korean hackers are using EtherHiding, a blockchain-based technique, to deliver malware and steal cryptocurrency
A newly identified cybercrime group TA585 is running an advanced cyber operation distributing MonsterV2 malware
Spanish authorities have arrested a 25-year-old Brazilian accused of leading the GXC Team and selling malware and AI tools to cybercriminals
A new campaign distributing the Stealit infostealer employs previously unknown malware delivery techniques and infrastructure