Almost all sites culled in hidden mining crypto currency, CoinHive software was installed, which hackers were able to implement through the vulnerability of the BrowseAloud extension, which allows users to use the sites for people with poor eyesight. First, the extension was hacked, and then the scripts for the mining were introduced through the "hole" that appeared.
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Hackers infected state sites of the USA and Great Britain with miner Vyacheslav Larionov