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Implementing the SCA should lead to fewer security-related changes being required at a later stage. It also reduces the chance of repeating mistakes that may have compromised security in the past.
A well-run control room can provide the fundamental principles of Deter, Detect and Delay.
… and only accept deliveries that are essential  DB10 - Scan all mail and ensure that postal procedures are robust  …
… people in restricted areas.   See, Check and Notify (SCaN) Protect your organisation from a range of threats with SCaN training. See, Check and Notify (SCaN) aims to help businesses and organisations maximise …
… the ACT Awareness e-Learning  Visit See, Check and Notify (SCaN) … Ballot box and cyber security …
Good housekeeping is an important part of your security regime, helping to reduce the opportunity for placing suspicious items or bags and helping to deal with false alarms and hoaxes.
Physical security technologies often converge into a security control room and, while individual technologies may be working, the control room may not be effectively using this information.
The use of vehicles as a weapon remains a realistic possibility, amongst other forms of attack covered later in this section. Vehicles are widely available and easy to use with devastating effect. Consequently, driving a vehicle into a queue or crowd is a low complexity attack that is easy to initiate.
If you are alerted to a firearms or weapons attack, stay calm, RUN or HIDE, only when it is safe TELL the police