Noun
security theater (uncountable)
Security measures which are intended to, or do, provide a feeling or illusion of improved security, while doing little or nothing to actually improve security.
Coordinate term: hygiene theater
For example, some consider the screening of airline passengers based on static databases to have been Security theater and the Computer Assisted Passenger Prescreening System to have created a decrease in objective security. Source: Internet
Security theater is a critical term for deployment of measures primarily aimed at raising subjective security without a genuine or commensurate concern for the effects of that action on real safety. Source: Internet