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.
Unknown senders have been shipping smartwatches to service members, leading to questions regarding what kind of ulterior motive is at play, malware or otherwise.
Exploiting a flaw in how the app handles communication with external tenants gives threat actors an easy way to send malicious files from a trusted source to an organization's employees, but no patch is imminent.
Camaro Dragon (Mustang Panda) is spreading a malware variant of WispRider quickly across the globe even through air gaps, often unbeknown to users.
The notorious APT15 used common malware tools and a third-generation custom 'Graphican' backdoor to continue its information gathering exploits, this time against foreign ministries.