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.
The Russian-language malware primarily enlists computers to mine Monero, but theoretically it can do worse.
Despite a law enforcement sweep last May, the sophisticated downloader malware is re-emerging.
GoDaddy flagged a ClickFix campaign that infected 6,000 sites in a one-day period, with attackers using stolen admin credentials to distribute malware.
The persistent infostealer's latest campaign inserts fake CAPTCHA pages into legitimate applications, fooling users into executing the malicious payload, researchers find.
The "Code-on-Toast" supply chain cyberattacks by APT37 delivered data-stealing malware to users in South Korea who had enabled Toast pop-up ads.