Ransomware

Updated 31 Jul 2026

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def
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  malware that encrypts a victim's data files (pictures, documents, music, movies, etc.) while leaving the operating system itself running, then demands payment for the decryption key
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note
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  the attacker wants the victim's system running but not usable — an unfortunate, malicious application of public-key cryptography, paid for via untraceable payment systems
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protection
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  always keep an offline backup; keep the OS, applications, and anti-virus/anti-malware signatures fully up to date
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related
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  Malware
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  Encryption
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cards
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  Waht does ransomware actually do to a system?
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    Encrypts the victim's data files while leaving the OS itself running, then demands payment for the decryption key

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