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A malware framework called OkoBot has been running on Windows machines since April 2025, and one of its modules is built to con hardware wallet owners out of their recovery phrase
Infosec buffs say Windows users could have been infected with a nasty trojan, while Mac users got off lightly
A poisoned npm package infected 140+ projects with a hidden payload. This report highlights how to detect, hunt, and defend against supply chain attacks using Microsoft Defender and actionable threat intelligence. The post From package to postinstall payload: Inside the Mastra npm supply chain compromise by Sapphire Sleet appeared first on Microsoft Security Blog.
Attackers Compromised More Than 70 Microsoft Repositories in Under 2 MinutesAttackers linked to the Miasma supply-chain campaign compromised a Microsoft contributor account and pushed malicious code into more than 70 repositories, using artificial intelligence-assisted coding tools as an infection path to steal credentials and developer secrets at scale.
The Iranian state-sponsored hacking group known as MuddyWater (aka Mango Sandstorm, Seedworm, and Static Kitten) has been attributed to a ransomware attack in what has been described as a "false flag" operation
Microsoft is calling attention to a new campaign that has leveraged WhatsApp messages to distribute malicious Visual Basic Script (VBS) files
Indian defense sector and government-aligned organizations have been targeted by multiple campaigns that are designed to compromise Windows and Linux environments with remote access trojans capable of stealing sensitive data and ensuring continued access to infected machines
The North Korea-linked threat actor known as UNC1069 has been observed targeting the cryptocurrency sector to steal sensitive data from Windows and macOS systems with the ultimate goal of facilitating financial theft
APT28's attacks rely on specially crafted Microsoft Rich Text Format (RTF) documents to kick off a multistage infection chain to deliver malicious payloads.
SHADOW#REACTOR is a multi-stage Windows malware campaign that stealthily deploys the Remcos RAT using complex infection techniques
Cybersecurity researchers have disclosed details of a new campaign dubbed SHADOW#REACTOR that employs an evasive multi-stage attack chain to deliver a commercially available remote administration tool called Remcos RAT and establish persistent, covert remote access
And some are still active in the Microsoft Edge store A seven-year malicious browser extension campaign infected 4.3 million Google Chrome and Microsoft Edge users with malware, including backdoors and spyware sending people's data to servers in China. And, according to Koi researchers, five of the extensions with more than 4 million installs are still live in the Edge marketplace.…
Security pros explore whether infection-spoofing code can immunize Windows systems against attack Feature What's better, prevention or cure? For a long time the global cybersecurity industry has operated by reacting to attacks and computer viruses. But given that ransomware has continued to escalate, more proactive action is needed.…
A financially motivated threat actor codenamed UNC5142 has been observed abusing blockchain smart contracts as a way to facilitate the distribution of information stealers such as Atomic (AMOS), Lumma, Rhadamanthys (aka RADTHIEF), and Vidar, targeting both Windows and Apple macOS systems
Amazon, Apple, Google, and Microsoft among major customers Data I/O, a major electronics manufacturer whose customers include Amazon, Apple, Google, and Microsoft, notified federal regulators that it fell victim to a ransomware infection on August 16 that continues to disrupt its business operations.…
The "is" package was infected with cross-platform malware after a scam targeting maintainers The popular npm package "is" was infected with cross-platform malware, around the same time that linting utility packages used with the prettier code formatter were infected with Windows-only malware.…
A sprawling operation undertaken by global law enforcement agencies and a consortium of private sector firms has disrupted the online infrastructure associated with a commodity information stealer known as Lumma (aka LummaC or LummaC2), seizing 2,300 domains that acted as the command-and-control (C2) backbone to commandeer infected Windows systems
Threat Actors Deploy Obfuscation Tactics to Targets Windows MachinesLikely Chinese nation-state hackers are targeting European companies using previously unseen malware backdoor variants with advanced network tunneling and evasion capabilities for data theft. Brussels-based security firm Nviso links the campaign to a threat actor tracked as UNC5221.
The financially motivated threat actor known as FIN7 has been linked to a Python-based backdoor called Anubis (not to be confused with an Android banking trojan of the same name) that can grant them remote access to compromised Windows systems
Trend Research discusses the delivery methods, custom payloads, and techniques used by Water Gamayun, the suspected Russian threat actor abusing a zero-day vulnerability in the Microsoft Management Console framework (CVE-2025-26633) to execute malicious code on infected machines.