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 variant of the RomCom malware called SnipBot, has been used in attacks that pivot on the network to steal data from compromised systems. [...]
Infostealer malware developers released updates claiming to bypass Google Chrome's recently introduced feature App-Bound Encryption to protect sensitive data such as cookies. [...]
While cybercriminals have used generative AI technology to create convincing emails, government agencies have warned about the potential abuse of AI tools to creating malicious software, despite the safeguards and restrictions that vendors implemented. [...]
A new version of the Octo Android malware, named "Octo2," has been seen spreading across Europe under the guise of NordVPN, Google Chrome, and an app called Europe Enterprise. [...]
Starting Thursday, Kaspersky deleted its anti-malware software from computers across the United States and replaced it with UltraAV's antivirus solution without warning. [...]
A new version of the Necro Trojan malware for Android was installed on 11 million devices through Google Play in malicious SDK supply chain attacks. [...]