An anonymous reader writes: More than 80 million Chrome users have installed one of 295 Chrome extensions that have been identified to hijack and insert ads inside Google and Bing search results. The malicious extensions were discovered by AdGuard, a company that provides ad-blocking solutions, while the company’s staff was looking into a series of fake ad-blocking extensions that were available on the official Chrome Web Store. AdGuard says that most of the extensions (245 out of the 295 extensions) were simplistic utilities that had no other function than to apply a custom background for Chrome’s “new tab” page. In addition to the 295 cluster, AdGuard also found a large number of copycat extensions that cloned popular add-ons to capitalize on their brands, and then load malicious code that performed ad fraud or cookie stuffing. ZDNet has the full list of 295 Chrome extensions embedded in their article.
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