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.
Cybersecurity researchers have uncovered a novel malware campaign that leverages Google Sheets as a command-and-control (C2) mechanism
Cybersecurity researchers have disclosed a new campaign that potentially targets users in the Middle East through malware that disguises itself as Palo Alto Networks GlobalProtect virtual private network (VPN) tool
Threat actors with ties to North Korea have been observed publishing a set of malicious packages to the npm registry, indicating "coordinated and relentless" efforts to target developers with malware and steal cryptocurrency assets
A non-profit supporting Vietnamese human rights has been the target of a multi-year campaign designed to deliver a variety of malware on compromised hosts
Cybersecurity researchers have flagged multiple in-the-wild exploit campaigns that leveraged now-patched flaws in Apple Safari and Google Chrome browsers to infect mobile users with information-stealing malware
Cybersecurity researchers have uncovered new Android malware that can relay victims' contactless payment data from physical credit and debit cards to an attacker-controlled device with the goal of conducting fraudulent operations