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.
New AcidPour variant can attack a significantly broader range of targets including IoT devices, storage area networks, and handhelds.
Hackers are seeking sensitive personal information on user devices, including banking data and SMS messages.
Unsophisticated threat actor is targeting Russian companies with both readily available malware and authentic software.
Companies trust lawyers with the most sensitive information they've got. Attackers are aiming to exploit that bond to deliver malware.
The cyber campaign uses social engineering and sophisticated evasion tactics, including a novel malware-delivery method, to compromise hundreds of Microsoft Office users.
Interpol assisted in the operation, in which analysts identified Grandoreiro group members by analyzing and matching malware samples.
It remains unclear how long the IT services giant's systems were infiltrated and just how the cyberattack unfolded.