It had the ability to access a site that "loaded arbitrary code on all pages viewed by the user," according to the Kaspersky report. How did these malicious Chrome Extensions get caught?Ī Chrome extension named PDF Toolbox alarmed cybersecurity investigator Vladimir Palant when he, upon close inspection, discovered a suspicious extraneous functionality. What's worse is that a browser extension may play an innocent game at first, but with the owner's command, it can transform into a malicious plugin. Replace the browser's home page with an advertising link.Steal card details and account credentials.Track your activity to collect and sell information about you. Plus, they can change the contents of any page.Īs such, malicious browser extensions can do the following In other words, ill-intentioned actors can see everything you do and follow all the sites you visit. Most browser plugins ask your permission to read and change your data on all websites. Kaspersky said that browser extensions are breeding grounds for malicious cybercriminal activity because users give them high-level access. Among some of the reviews, there were complaints from users about the extensions swapping out addresses in search results with adware links, but according to Kaspersky, "ordinary users' complaints generally go unheeded." What can these malicious extensions do?
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