If your PC is infected with ransomware, it will spread from file to file, encrypting them until you pay the bad guys for the digital key. But ransomware can also spread to your files stored in the cloud—and that’s what Microsoft’s new OneDrive protections are designed to address.
On Thursday Microsoft announced the ability to “roll back” the files stored in OneDrive to versions stored up to a month ago, to help you return to a point before you were infected by malware. The company also said it will use its automated threat-detection systems to figure out when the ransomware began infecting those files and alert you via your phone that an infection has taken place.
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