H

Hardware

The physical components in a computer system.

Hardware segmentation

The practice of isolating functions by placing them on separate hardware platforms.

Hearsay evidence

Evidence that isn’t based on personal, first-hand knowledge of the witness but was obtained through other sources.

Hearsay rule

Under the Federal Rules of Evidence, hearsay evidence is normally not admissible in court.

Hidden code

An attack whereby secret (and usually malicious) computer code is embedded within another program.

HIPAA (Health Insurance Portability and Accountability Act)

Federal act that addresses security and privacy requirements for medical systems and information.

Honeypot

A decoy system deployed by a security administrator to discover the attack methods of potential hackers.

Hot site

A fully configured alternate computer facility with electrical power, HVAC, and functioning file/print servers and workstations. See also HVAC.

HSSI (High-Speed Serial Interface)

A point-to-point WAN connection protocol.

Hub

A network device used to connect several LAN devices together. Also known as a Concentrator.

HVAC

Heating, ventilation, and air conditioning.