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.
Six out of the eight products achieved an "A" rating or higher for blocking malware attacks. Reports are provided to the community for free.
The Russia-backed Nobelium APT has pioneered a post-exploitation tool allowing attackers to authenticate as any user.
Three of the world's leading browsers were measured for phishing and malware protection, with time to block and protection over time as key metrics in test scores.
The scans used by the Python Package Index (PyPI) to find malware fail to catch 41% of bad packages, while creating plentiful false positives.
Security vendor Sucuri says adversaries are injecting malicious JavaScript into numerous WordPress websites that triggers phony bot-related checks.
Novel ransomware was created with the Go open source programming language, demonstrating how malware authors increasingly are opting to employ the flexible coding language.