Ransomware

Ransomware refers to malware that restricts or prevents access to data and systems (especially through encryption) and only releases these resources against payment of a ransom. This is an attack on the security objective of availability and a form of digital blackmail.
BSI - Ransomware: Bedrohungslage, Prävention & Reaktion 2019

There is nothing to add to the BSI's comprehensive status report on ransomware.

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