Security
Security was the word to describe and group the actions, technology, and personnel used to observe the law.

In 2154, Cold Station 12 was facing a security threat by the Augments. ()

The lighting controls aboard Deep Space 9 were secondary systems which were not covered by security. ()

A blind spot was the location where security could not detect an intruder. ()

In 2373, Tuvok had completed his monthly security evaluation. He was about to report to Captain Kathryn Janeway about all systems and crew but was interrupted by a red alert issued by Commander Chakotay over intercom. ()

Part of the holoprogram The Voyager Encounter was the Borg activation sequence, a security program sending Borg drones to eliminate invaders. ()

In 2375, Neelix suggested stronger security measures aboard  because of the "Midnight Snackers" actions aboard the starship. ()

Technology 
 See: Security technology

See also 
 Security alert
 Security clearance
 Security confinement
 Security officer
 Starfleet Security
 Security risk
 Security rod
 Security scan
 Security threat