olemus
kettafailile eraldatud ruumi kasutamata osa, üks võimalikke kahjurvara peidupaiku
= the unused portion of space allocated to a disk file, one of the possible hiding places for malware

NIST SP 800-86:
the unused space in a file allocation block or memory page that may hold residual data

ülevaateid
https://www.computerhope.com/jargon/s/slack-space.htm

https://www.open.edu/openlearn/science-maths-technology/computing-ict/introducing-computing-and-it/content-section-5.4

vt ka
- tühemeviirus