Latest cybersecurity reporting from selected sources.

Microsoft has found a malicious Chrome extension that posed as the AI search engine Perplexity and quietly logged what people searched for. It routed every query and every character typed into the address bar through an attacker-controlled server before redirecting users to real results

Microsoft has disclosed details of a Windows-based cryptocurrency clipper campaign that has targeted users since February 2026 with clipboard-intercepting malware with self-spreading capabilities and using the Tor anonymity network to hide communication

Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet

Microsoft on Tuesday released fixes for a record 206 security vulnerabilities impacting its software portfolio, including three flaws that have been publicly disclosed at the time of release

Cybersecurity researchers have disclosed a one-click attack via Microsoft Visual Studio Code (VS Code) that makes it possible to steal a user's GitHub token

Cybersecurity researchers have disclosed details of an unpatched issue that could be exploited to disclose a user's NTLMv2 hash to the attacker

Microsoft has come out strongly in favor of Coordinated Vulnerability Disclosure (CVD), urging the research community to share their findings and give affected vendors an opportunity to better understand the impact and address them before they are publicly disclosed

Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender has come under active exploitation in the wild

Microsoft on Tuesday released a mitigation for a BitLocker bypass vulnerability named YellowKey following its public disclosure last week

Chaotic Eclipse, the security researcher behind the recently disclosed Windows flaws, YellowKey and GreenPlasma, has released a proof-of-concept (PoC) for a Windows privilege escalation zero-day flaw that grants attackers SYSTEM privileges on fully patched Windows systems

Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that it said has come under active exploitation in the wild

An anonymous cybersecurity researcher who disclosed three Microsoft Defender vulnerabilities has returned with two more zero-days involving a BitLocker bypass and a privilege escalation impacting Windows Collaborative Translation Framework (CTFMON)

Cybersecurity researchers have disclosed details of an intrusion that involved the use of a CloudZ remote access tool (RAT) and a previous undocumented plugin dubbed Pheno with the aim of facilitating credential theft

Microsoft has disclosed details of a large-scale credential theft campaign that has leveraged a combination of code of conduct-themed lures and legitimate email services to direct users to attacker-controlled domains and steal authentication tokens

Cybersecurity researchers have disclosed details of a stealthy Python-based backdoor framework called DEEP#DOOR that comes with capabilities to establish persistent access and harvest a wide range of sensitive information from compromised hosts

Huntress is warning that threat actors are exploiting three recently disclosed security flaws in Microsoft Defender to gain elevated privileges in compromised systems

Cybersecurity researchers have disclosed details of a now-patched bug impacting Open VSX's pre-publish scanning pipeline to cause the tool to allow a malicious Microsoft Visual Studio Code (VS Code) extension to pass the vetting process and go live in the registry

Microsoft has disclosed details of a credential theft campaign that employs fake virtual private network (VPN) clients distributed through search engine optimization (SEO) poisoning techniques

Cybersecurity researchers have disclosed details of a new banking malware targeting Brazilian users that's written in Rust, marking a significant departure from other known Delphi-based malware families associated with the Latin American cybercrime ecosystem

Microsoft on Tuesday released patches for a set of 84 new security vulnerabilities affecting various software components, including two that have been listed as publicly known