[zimpenfish]

The very first sentence of that link would include this under "ransomware"

> Ransomware is a type of malware from cryptovirology that threatens to publish the victim's data or perpetually block access to it unless a ransom is paid.

(added emphasis)

[flyGuyOnTheSly]

That's a single sentence pulled from a very long definition, though.

Here's the third sentence from that very same paragraph:

>It encrypts the victim's files, making them inaccessible, and demands a ransom payment to decrypt them.

Not everything can be explained in a single sentence.