Since 2011, users have increasingly seen messages warning that their computer is locked and demanding money in exchange for access to their PCs, purportedly from the FBI and police agencies.
These are not the actions of law enforcement — but are a type of malware called ransomware. In Ransomware: Hijacking Your Data the experts at SophosLabs look in depth at ransomware variants and delivery mechanisms, and show how you can protect your data with a complete security strategy.
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