Ransomware hackers have developed a sly new tactic - using a fake Windows Update screen to disguise the fact that they are busy locking all your files. Discovered by AVG's Jakub Kroustek, the 'Fantorri ransomware claims that it is carrying out a "critical" Windows update. The crooks behind this contemptible con have tried to make it look believable by adding a Microsoft 'copyright' line, and by showing what percentage of the update is complete.
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