Browser Extension
Over 100 Chrome Web Store extensions steal user accounts, data
More than 100 malicious extensions in the official Chrome Web Store are attempting to steal Google OAuth2 Bearer tokens, deploy backdoors, and carry out ad fraud. Researchers at application security company Socket discovered that the malicious extensions are part of a coordinated campaign that uses the same command-and-control (C2) infrastructure. The threat actor published the […]
LinkedIn secretly scans for 6,000+ Chrome extensions, collects data
A new report dubbed “BrowserGate” warns that Microsoft’s LinkedIn is using hidden JavaScript scripts on its website to scan visitors’ browsers for installed extensions and collect device data. According to a report by Fairlinked e.V., which claims to be an association of commercial LinkedIn users, Microsoft’s platform injects JavaScript into user sessions that checks for thousands of […]
Fake AI Chrome extensions with 300K users steal credentials, emails
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. Some of the extensions are still present in the Chrome Web Store and have been installed by tens of thousands of users, while others show a […]
New malware service guarantees phishing extensions on Chrome web store
A new malware-as-a-service (MaaS) called ‘Stanley’ promises malicious Chrome extensions that can clear Google’s review process and publish them to the Chrome Web Store. Researchers at end-to-end data security company Varonis named the project Stanley after the alias of the seller, who advertises easy phishing attacks by intercepting navigation and covering a webpage with an iframe […]
Fake ad blocker extension crashes the browser for ClickFix attacks
A malvertising campaign is using a fake ad-blocking Chrome and Edge extension named NexShield that intentionally crashes the browser in preparation for ClickFix attacks. The attacks were spotted earlier this month and delivered a new Python-based remote access tool called ModeloRAT that is deployed in corporate environments. The NexShield extension, which has been removed from the Chrome Web Store, was […]
Credential-stealing Chrome extensions target enterprise HR platforms
Malicious Chrome extensions on the Chrome Web Store masquerading as productivity and security tools for enterprise HR and ERP platforms were discovered stealing authentication credentials or blocking management pages used to respond to security incidents. The campaign was discovered by cybersecurity firm Socket, which says it identified five Chrome extensions targeting Workday, NetSuite, and SAP […]
Malicious GhostPoster browser extensions found with 840,000 installs
Another set of 17 malicious extensions linked to the GhostPoster campaign has been discovered in Chrome, Firefox, and Edge stores, where they accumulated a total of 840,000 installations. The GhostPoster campaign was first reported by Koi Security researchers in December. They found 17 extensions that were hiding malicious JavaScript code in their logo images, which monitored browser activity and planted […]
Zoom Stealer browser extensions harvest corporate meeting intelligence
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. Zoom Stealer is one of three browser extension campaigns that reached more than 7.8 million users over seven years and […]
Trust Wallet says 2,596 wallets drained in $7 million crypto theft attack
Trust Wallet says attackers who compromised its browser extension right before Christmas have drained approximately $7 million from nearly 3,000 cryptocurrency wallet addresses. The cryptocurrency wallet (used by over 200 million people according to its official website) allows users to store, send, receive, and manage Bitcoin, Ethereum, Solana, and thousands of other cryptocurrencies and digital […]
GhostPoster attacks hide malicious JavaScript in Firefox addon logos
A new campaign dubbed ‘GhostPoster’ is hiding JavaScript code in the image logo of malicious Firefox extensions with more than 50,000 downloads, to monitor browser activity and plant a backdoor. The malicious code grants operators persistent high-privilege access to the browser, enabling them to hijack affiliate links, inject tracking code, and commit click and ad fraud. […]