Ransomware is malware that locks and encrypts a victim's data, files, devices or systems, rendering them inaccessible and unusable until the attacker receives a ransom payment. A ransomware attack can shut down a business for days, even weeks and -- even when the company pays the ransom -- there's no guarantee it will ever get its assets back, or that it won't be attacked again. This guide covers the history and basics of ransomware, identifies the most common targets and offers expert instructions on how to prevent an attack. Or, if the worst happens, how to recognize an attack's taken place and remove the ransomware as swiftly as possible.
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