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57 suspicious Chrome extensions with millions of installs | Kaspersky official blog

  • Cybersecurity researchers found 57 suspicious extensions in the Chrome Web Store with over six million users.
  • The extensions had alarming permissions that didn’t match their descriptions and were hidden from searches.
  • Browser extensions can pose security risks and compromise privacy, even if downloaded from official stores.
  • The suspicious extensions requested broad permissions, such as access to cookies, potentially allowing for data theft.
  • These extensions could track user actions, change search engines, inject scripts, and activate advanced tracking.
  • An investigation started with one extension, Fire Shield Extension Protection, which led to the discovery of more suspicious plugins.
  • Most of these extensions claimed to block ads or improve search results, but lacked the necessary code to do so.
  • The plugins were linked to a suspicious domain and shared common traits, suggesting they belong to the same family of spyware.
  • Users are advised to check for and delete suspicious extensions, download only necessary ones, and use reliable security software.
  • The extensions appeared to be part of a spyware or data-stealing program family, emphasizing the importance of cautious extension usage.

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