Hostnames are the system names assigned by a computer by the system, user, or owner.

Ahostnameis aunique identifier assigned to a computer on a network.

Used innetwork security and OSINT investigationstotrack users and devices.

Law enforcement can subpoena ISPsto obtainhostname logs and associated IPsin cyber investigations.

References:McAfee Institute CCII Cyber Intelligence Guide, OSINT Handbook​.