olemus
nakatatud programmi tihendav viirus
=
a virus that compresses the infected file

ülevaateid
https://en.wikipedia.org/wiki/Compression_virus

näiteid
- Cruncher
http://virus.wikidot.com/cruncher
- Redemption
http://www.spy-emergency.com/research/V/Virus.Win32.Redemption.html
- HybrisF
- Aldebera