The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
Search across headline titles and summaries.
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 strain of JavaScript dropper has been observed delivering next-stage payloads like Bumblebee and IcedID
A new phishing campaign codenamed MULTI#STORM has set its sights on India and the U.S. by leveraging JavaScript files to deliver remote access trojans on compromised systems
The Chinese cyber espionage actor known as Camaro Dragon has been observed leveraging a new strain of self-propagating malware that spreads through compromised USB drives
The North Korean threat actor known as ScarCruft has been observed using an information-stealing malware with previous undocumented wiretapping features as well as a backdoor developed using Golang that exploits the Ably real-time messaging service
More details have emerged about the spyware implant that's delivered to iOS devices as part of a campaign called Operation Triangulation
A new malware called Condi has been observed exploiting a security vulnerability in TP-Link Archer AX21 (AX1800) Wi-Fi routers to rope the devices into a distributed denial-of-service (DDoS) botnet
A highly targeted cyber attack against an East Asian IT company involved the deployment of a custom malware written in Golang called RDStealer
A new information-stealing malware called Mystic Stealer has been found to steal data from about 40 different web browsers and over 70 web browser extensions