Ransomware is a type of malware that encrypts a victim's computer files and demands payment to decrypt them. The first known ransomware attack occurred in 1989 targeting the healthcare industry and was called the AIDS Trojan. Ransomware attacks work by encrypting a victim's files and demanding payment, typically in cryptocurrency, to regain access to their files.

1. Ransomware

2.  Ransomware is a type of malware that involves
an attacker locking the victim's computer
system files -- typically through encryption --
and demanding a payment to decrypt and
unlock them.
What is ransomware?

3. History:
According to Becker's Hospital Review, the first known
ransomware attack occurred in 1989 and targeted the healthcare
industry.. ... This ransomware attack became known as the AIDS
Trojan

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