Building Site Security Signs Building Site Security Sign Security Advice Building Site Security securitysignage.co.uk Building Security Sign Deterrence , Detection , Delay and Response . Successful crime reduction strategies should aim to reduce the risk to the building / site by increasing the risk to the thief or other criminal. The types and level of security and protection used should be determined by the results of the risk assessment. Consideration should be given to the use of the site and the level of security should reflect the time when the site is most at risk. A simple piece of advice is to not to place all hope in a single solution. Security provisions should be used in combination to achieve four things: Deterrence , Detection , Delay and Response . In many cases a solution will contribute to more than one of these. For example, a strong fence will deter a burglar and also cause a delay gai...