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The threat actor behind two malicious browser extension campaigns, ShadyPanda and GhostPoster, has been attributed to a third attack campaign codenamed DarkSpectre that has impacted 2.2 million users of Google Chrome, Microsoft Edge, and Mozilla Firefox
A newly discovered campaign, which researchers call Zoom Stealer, is affecting 2.2 million Chrome, Firefox, and Microsoft Edge users through 18 extensions that collect online meeting-related data like URLs, IDs, topics, descriptions, and embedded passwords. [...]
Cybersecurity researchers have discovered an updated version of a known Apple macOS malware called XCSSET that has been observed in limited attacks
During the second day of Pwn2Own Berlin 2025, competitors earned $435,000 after exploiting zero-day bugs in multiple products, including Microsoft SharePoint, VMware ESXi, Oracle VirtualBox, Red Hat Enterprise Linux, and Mozilla Firefox. [...]
Single click on a phishing link in Google browser blew up sandbox on Windows Google pushed out an emergency patch for Chrome on Windows this week to stop attackers exploiting a sandbox-breaking zero-day vulnerability, seemingly used by snoops to target certain folks in Russia.…
Mozilla has released updates to address a critical security flaw impacting its Firefox browser for Windows, merely days after Google patched a similar flaw in Chrome that came under active exploitation as a zero-day
Mozilla has released Firefox 136.0.4 to patch a critical security vulnerability that can let attackers escape the web browser's sandbox on Windows systems. [...]
In an effort to turn the tide, Mozilla is testing a fresh approach that could persuade more people to switch their default browser on Windows during the installation of the browser. [...]
Mozilla is testing a fresh approach that could persuade more people to switch their default browser on Windows. [...]
Russia-backed hackers, known as RomCom, have exploited critical zero-day vulnerabilities in Mozilla Firefox and Windows to launch targeted attacks
The innocuously named Russian-sponsored cyber threat actor has combined critical and serious vulnerabilities in Windows and Firefox products in a zero-click code execution exploit.
The Russia-aligned threat actor known as RomCom has been linked to the zero-day exploitation of two security flaws, one in Mozilla Firefox and the other in Microsoft Windows, as part of attacks designed to deliver the eponymous backdoor on victim systems
Russian-based RomCom cybercrime group chained two zero-day vulnerabilities in recent attacks targeting Firefox and Tor Browser users across Europe and North America. [...]
Can't reach someone's private server on localhost from outside? No problem A years-old security oversight has been addressed in basically all web browsers – Chromium-based browsers, including Microsoft Edge and Google Chrome, WebKit browsers like Apple's Safari, and Mozilla's Firefox.…
Google has rolled back a recent release of its reCaptcha captcha script after a bug caused the service to no longer work on Firefox for Windows. [...]
No zero-days this month, so you're patching to stay ahead, not merely to catch up!
Mozilla has addressed issues causing Firefox to crash on macOS and to freeze with a non-responding blank window when starting on Windows 11 systems. [...]
Mozilla has addressed a known issue causing the Firefox web browser to freeze on startup on Windows 11 systems after installing the KB5023706 March 2023 cumulative update. [...]
Meanwhile NSO faces new lawsuit over Pegasus flying onto journalists' phones Google's Threat Analysis Group (TAG) said on Wednesday that its researchers discovered commercial spyware called Heliconia that's designed to exploit vulnerabilities in Chrome and Firefox browsers as well as Microsoft Defender security software.…