The term 'FRISKS' DOWN (4 letters) is 'PATS'. This is an acronym for 'Physical, Administrative, Technical, and Procedural Security', which are the four main components of a comprehensive security system. Physical security involves physical barriers such as locks, fences, and guards. Administrative security includes policies, procedures, and training. Technical security includes the use of technology such as firewalls, encryption, and access control systems. Finally, procedural security involves the implementation of processes and procedures to ensure that security measures are followed.