Microsoft’s open source tools were hacked to steal passwords of AI developers

Microsoft has cut off access to dozens of its open source projects hosted on GitHub as it investigates how hackers apparently breached the projects and injected password-stealing malware into the code. Many of the affected projects relate to Microsoft’s cloud Read More …

From cause to cash: a cross-border look at hacktivist activity

While tracking the activities of 4BID Kaspersky researchers uncovered a new string of campaigns that appear to be the work of several interconnected actors. While politically motivated groups generally limit their scope to specific nations – for 4BID and its peers, Read More …

Seeking Counsel: Ongoing Targeted Campaign Against US Law Firms

From January through May 2026, Mandiant identified a financially motivated data theft extortion campaign executed by the threat cluster UNC3753 (also tracked as “Luna Moth,” “Chatty Spider,” and “Silent Ransom Group”) targeting dozens of organizations across professional, legal, and financial Read More …

Meta, Starlink and Microsoft team up with the FBI to delete over 1.4 million accounts and seize millions in cryptocurrency related to huge scam networks targeting Americans

Dozens of people have been arrested, and millions of dollars in cryptocurrency seized, in a large-scale, multi-national operation against internet scammers and fraudsters. On May 18, the US Department of Justice, the FBI, Secret Service, law enforcement agencies in the Read More …

You do surprise me.exe: An unexpected executable in Hola Browser

During review work related to an AppEsteem Windows Certified Application test, Sophos X-Ops recently identified an unexpected executable delivered alongside Hola Browser (version 1.251.91.0). The executable, me.exe, was not listed as a certified component, and appears to be a crypto-miner. After the issue was reported through Read More …

Error 524 Decoy: Unmasking a Global Smishing Operation Hiding Behind Error Pages

Group-IB researchers expose a large-scale smishing and phishing operation impersonating 260+ brands across 72 countries, using fake Cloudflare error pages, geofencing, and encrypted WebSocket channels for real-time credit card theft. The operation has a layered anti-analysis evasion architecture, which uses Read More …

Password manager Dashlane says hackers stole some customers’ password vaults

Password manager maker Dashlane says hackers have obtained at least a dozen encrypted vaults used for storing customer passwords during a weekend cyberattack. The company said on its website that hackers brute-forced the company’s two-factor authentication system, granting the hackers access to about 20 Read More …

Operation FlutterBridge: macOS Malvertising Campaign Spreads New FlutterShell Backdoor

Palo Alto Unit 42 are tracking an increasingly widespread malvertising campaign targeting macOS. This campaign appears to be the next stage of a previous campaign known as JSCoreRunner, which was first identified in August 2025. In recent months, the financially-motivated Read More …