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 Chinese espionage group tracked as UNC5221 has been accessing Microsoft 365 environments using the Brickstorm backdoor and previously undocumented malware named Plenet and AgentPSD. [...]
Arabic-speaking users have emerged as the target of a new Android spyware codenamed Asin, according to findings from ESET
Security researchers and the FBI are warning that a wave of FIFA-themed fraud is already hitting World Cup 2026 fans, days before the June 11 kickoff
A new supply-chain attack has infected 36 packages on the Node Package Manager (npm) index with infostealer malware called IronWorm. [...]
Microsoft Detection and Response Team (DART) details how it has uncovered malicious AI applications as cyber criminals manipulate organizations adopting AI tools
A new China-linked cybercrime group known as TA4922 has expanded its targeting focus to target European organizations in the U.K., Germany, Italy, and South Africa
Gamaredon exploits a WinRAR flaw to drop modular, nearly fileless malware on Ukrainian targets, hiding payloads in Windows streams and resolving C2s via Telegram. Sekoia’s Threat Detection & Research team dropped a YARA rule in late December 2025 to hunt for new initial access vectors, and by January 2026 it had already generated a dozen […]
Cybersecurity researchers have flagged a large-scale operation that impersonates open-source and freeware projects to funnel unsuspecting users through a Traffic Distribution System (TDS) and deliver malware families like Remus Stealer, AnimateClipper, and the SessionGate framework
A Chinese-speaking cybercrime group has expanded its targeting to the European space, deploying previously undocumented malware and the Atlas backdoor. [...]
Python scripts were used to test malware against endpoint detection and response agents from Sophos, CrowdStrike, and Windows Defender.
Russia’s FSB claims foreign intelligence planted malware on senior officials’ phones to intercept calls and activate cameras. No technical evidence, no country named. On June 2, 2026, Russia’s Federal Security Service (FSB) published a statement claiming it had uncovered and documented a large-scale foreign intelligence operation targeting the mobile devices of senior Russian officials. The […]
Cybersecurity researchers have flagged a new campaign targeting Minecraft players via YouTube to spread malware capable of gaining control of victims' systems
A large-scale malware campaign dubbed WeedHack is targeting Minecraft players and has infected more than 116,000 systems since January. [...]
A large-scale malware campaign dubbed WeedHack is targeting Minecraft players and has infected more than 116,000 systems since January. [...]
A sneaky, wide-scale IAB operation uses a malicious traffic distribution system (TDS) to redirect visitors of trusted websites to ones that deliver malware.
China is stealing data from high-value targets via a sneaky, double-layer spear-phishing campaign that includes the Azureveil malware.
The Russian hacking group known as Gamaredon has been attributed to the continued exploitation of a WinRAR vulnerability to deliver multiple malware families aimed at data theft and propagation
A threat actor used AI coding tools to build and test EDR evasion malware, Sophos finds
Malware on approximately 2,000 WordPress sites hid C2 instructions in Steam profile comments using invisible Unicode. GoDaddy researchers spotted a command-and-control infrastructure for a malware campaign abusing Valve’s Steam gaming platform. The experts discovered malware on approximately 1,980 WordPress sites that fetches its instructions by reading Steam Community profile comments, where the actual payload is […]
A threat actor tracked as DriveSurge has been operating large-scale malware distribution campaigns using ClickFix and FakeUpdates techniques on compromised sites. [...]