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Cybersecurity researchers have discovered 11 old, Microsoft-signed, Unified Extensible Firmware Interface (UEFI) applications that could be abused to bypass Secure Boot on most systems using the modern firmware standard
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Novel Java-Based QuimaRAT Targets Windows, macOS, and Linux Vibe Coded Extortion: Avalon’s Path from Legal Lure to CrownX Ransom Capabilities Armored Likho digging a snake pit: inside the covert BusySnake Stealer campaign RedWing: A […]
Cybersecurity researchers have flagged a novel Java-based remote access trojan (RAT) called QuimaRAT that's capable of targeting Windows, Linux, and macOS environments
Cybersecurity researchers have flagged a new malware artifact generated using DeepSeek that constructed a novel attack path combining "unrealistic browser-malware concepts with a real browser capability" to turn it into a working ransomware technique that runs entirely inside the browser on both Windows and Android devices
Hackers are exploiting a recently disclosed critical vulnerability (CVE-2026-48558) in SimpleHelp to deploy Djinn Stealer, a previously undocumented cross-platform information stealer targeting Windows, macOS, and Linux. [...]
Windows variants for the SprySOCKS Linux malware have been used in attacks targeting government organizations in at least four countries. [...]
A study by the University of Toronto shows how artificial intelligence can power autonomous worms capable of tailoring attacks against Windows, Linux and IoT devices. A group of researchers from the University of Toronto has demonstrated how open-source artificial intelligence models can be used to create a new category of computer worms capable of autonomously […]
A China-nexus cyber espionage group has been observed deploying a BSD variant of a known backdoor called BRICKSTORM, as well as two other malware families codenamed PLENET (aka GRIMBOLT) and AGENTPSD to target Linux systems
Researchers Trace Linux and Windows Toolsets to Suspected PRC Espionage ActivityNewly discovered malware tied to China-linked actors breached telecom providers across Asia and the Middle East, highlighting growing efforts to gain persistent access into interconnected communications infrastructure.
Also, YellowKey Gets CVE, 7-Eleven Breach, Linux Maintainers Warn on AI Bug SpamThis week, more incidents than we can list here. Among them: cloned Shai-Hulud malware, a new maximum CVSS Cisco flaw. Edge to stop loading passwords in plaintext. Tycoon 2FA offers a way around Microsoft multifactor. Convenience, taquitos and data breach: The 7-Eleven story. A MENA crackdown.
A Chinese cyber-espionage campaign has been targeting telecommunications providers with newly discovered Linux and Windows malware dubbed Showboat and JFMBackdoor, respectively. [...]
Compromised @antv npm packages deploy the Mini Shai-Hulud payload to steal CI/CD secrets from Linux-based automation environments. The malware executes during npm install and targets credentials across GitHub, AWS, Kubernetes, Vault, npm, and 1Password platforms. The post Mini Shai Hulud: Compromised @antv npm packages enable CI/CD credential theft appeared first on Microsoft Security Blog.
The website for the popular JDownloader download manager was compromised earlier this week to distribute malicious Windows and Linux installers, with the Windows payload found deploying a Python-based remote access trojan. [...]
Cybersecurity researchers have discovered three packages on the Python Package Index (PyPI) repository that are designed to stealthily deliver a previously unknown malware family called ZiChatBot on Windows and Linux systems
The threat actor known as Harvester has been attributed to a new Linux version of its GoGra backdoor deployed as part of attacks likely targeting entities in South Asia
A Linux variant of the GoGra backdoor uses legitimate Microsoft infrastructure, relying on an Outlook inbox for stealthy payload delivery. [...]
Hackers hijacked the npm account of the Axios package, a JavaScript HTTP client with 100M+ weekly downloads, to deliver remote access trojans to Linux, Windows, and macOS systems. [...]
The popular HTTP client known as Axios has suffered a supply chain attack after two newly published versions of the npm package introduced a malicious dependency that delivers a trojan capable of targeting Windows, macOS, and Linux systems
An undefined Chinese-speaking actor wields a combo of custom malware, open source tools, and LOTL binaries against Windows and Linux, likely for spying.
A China-linked advanced persistent threat actor tracked as UAT-9244 has been targeting telecommunication service providers in South America since 2024, compromising Windows, Linux, and network-edge devices. [...]