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.
A new version of the FakeCall malware for Android hijacks outgoing calls from a user to their bank, redirecting them to the attacker's phone number instead. [...]
The United States announced charges today against Maxim Rudometov, a Russian national, for being the suspected developer and administrator of the RedLine malware operation, one of the most prolific infostealers over the past few years. [...]
A hybrid espionage/influence campaign conducted by the Russian threat group 'UNC5812' has been uncovered, targeting Ukrainian military recruits with Windows and Android malware. [...]
The Dutch National Police seized the network infrastructure for the Redline and Meta infostealer malware operations in "Operation Magnus," warning cybercriminals that their data is now in the hands of the law enforcement. [...]