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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 Google Chrome extension with a "Featured" badge and six million users has been observed silently gathering every prompt entered by users into artificial intelligence (AI)-powered chatbots like OpenAI ChatGPT, Anthropic Claude, Microsoft Copilot, DeepSeek, Google Gemini, xAI Grok, Meta AI, and Perplexity
And some are still active in the Microsoft Edge store A seven-year malicious browser extension campaign infected 4.3 million Google Chrome and Microsoft Edge users with malware, including backdoors and spyware sending people's data to servers in China. And, according to Koi researchers, five of the extensions with more than 4 million installs are still live in the Edge marketplace.…
A proof-of-concept attack called "Cookie-Bite" uses a browser extension to steal browser session cookies from Azure Entra ID to bypass multi-factor authentication (MFA) protections and maintain access to cloud services like Microsoft 365, Outlook, and Teams. [...]
A new malware strain called Rilide has been targeting Chromium-based web browsers like Google Chrome, Brave, Opera, and Microsoft Edge, to monitor user browsing history, snap screenshots, and inject scripts that can steal cryptocurrency. [...]
An information-stealing Google Chrome browser extension named 'VenomSoftX' is being deployed by Windows malware to steal cryptocurrency and clipboard contents as users browse the web. [...]
A North Korean-backed threat group tracked as Kimsuky is stealing emails from Google Chrome or Microsoft Edge users browsing their webmail accounts using a malicious browser extension. [...]
A malicious browser extension with 350 variants is masquerading as a Google Translate add-on as part of an adware campaign targeting Russian users of Google Chrome, Opera, and Mozilla Firefox browsers