A set of 30 malicious Chrome extensions that have been installed by more than 300,000 users are masquerading as AI assistants to steal credentials, email content, and browsing information. [...]

Google Threat Intelligence Group (GTIG) has published a new report warning about AI model extraction/distillation attacks, in which private-sector firms and researchers use legitimate API access to systematically probe models and replicate their logic and reasoning. [...]

The AgreeTo add-in for Outlook has been hijacked and turned into a phishing kit that stole more than 4,000 Microsoft account credentials. [...]

The Netherlands Police have arrested a a 21-year-old man from Dordrecht, suspected of selling access to the JokerOTP phishing automation tool that can intercept one-time passwords (OTP) for hijacking accounts. [...]

A surge in LummaStealer infections has been observed, driven by social engineering campaigns leveraging the ClickFix technique to deliver the CastleLoader malware. [...]

A newly documented Linux botnet named SSHStalker is using the IRC (Internet Relay Chat) communication protocol for command-and-control (C2) operations. [...]

North Korean hackers are running tailored campaigns using AI-generated video and the ClickFix technique to deliver malware for macOS and Windows to targets in the cryptocurrency sector. [...]

A fake 7-Zip website is distributing a trojanized installer of the popular archiving tool that turns the user's computer into a residential proxy node. [...]

Volvo Group North America disclosed that it suffered an indirect data breach stemming from the compromise of IT systems at American business services giant Conduent, of which Volvo is a customer. [...]

A new commercial mobile spyware platform dubbed ZeroDayRAT is being advertised to cybercriminals on Telegram as a tool that provides full remote control over compromised Android and iOS devices. [...]

The Chinese threat actor tracked as UNC3886 breached Singapore's four largest telecommunication service providers, Singtel, StarHub, M1, and Simba, at least once last year. [...]

Hackers are now exploiting SolarWinds Web Help Desk (WHD) vulnerabilities to gain code execution rights on exposed systems and deploy legitimate tools, including the Velociraptor forensics tools, for persistence and remote control. [...]

SmarterTools confirmed last week that the Warlock ransomware gang breached its network after compromising an email system, but did not impact business applications or account data. [...]

A new open-source and cross-platform tool called Tirith can detect homoglyph attacks over command-line environments by analyzing URLs in typed commands and stopping their execution.  [...]

A new state-aligned cyberespionage threat group tracked as TGR-STA-1030/UNC6619, has conducted a global-scale operation dubbed the "Shadow Campaigns," where it targeted government infrastructure in 155 countries. [...]

Germany's domestic intelligence agency is warning of suspected state-sponsored threat actors targeting high-ranking individuals in phishing attacks via messaging apps like Signal. [...]

A newly discovered toolkit called DKnife has been used since 2019 to hijack traffic at the edge-device level and deliver malware in espionage campaigns. [...]

The Cybersecurity & Infrastructure Security Agency (CISA) in the U.S. has issued a warning about CVE-2026-24423, an unauthenticated remote code execution (RCE) flaw in SmarterMail that is used in ransomware attacks. [...]

Spain's Ministry of Science (Ministerio de Ciencia) announced a partial shutdown of its IT systems, affecting several citizen- and company-facing services. [...]