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Users of Chromium-based browsers, including Google Chrome, Brave, and Opera, are experiencing deceptive pop-ups that falsely claim a "Critical Update Required" or "Update available." These notifications are part of a scam designed to trick users into downloading malware disguised as software updates. Clicking on these prompts can lead to the download of harmful scripts, such as .vbs or .exe files, which traditional antivirus software often fails to detect. The issue is linked to compromised browser extensions that fetch malicious scripts from external servers. A specific extension, QuickLens – Search Screen with Google Lens, has been identified as a source of these pop-ups and has been removed from the Web Store. Other extensions, like “Enable Right Click & Copy Smart Unlock + OCR,” have also been implicated despite their popularity. Users are advised not to click on any links or run downloaded files and to check their browser settings for legitimate updates, as well as to audit and disable suspicious extensions.