Physical security, is the protection of corporate assets from threats such as unauthorized entry, theft or damage., Prevention, is taking the steps necessary to avert unauthorized access, theft, damage, or other type of security breach., Detection, is identifying that a security breach has happened or is happening., Recovery, is the process of returning a system to a functional state and repairing any damage., Access list, personnel who are authorized to enter a secure facility, Mantrap, A specialized entrance with two locking doors that create a security buffer zone between two areas., Turnstile, A barrier that permits entry in only one direction., Double-entry door, has two doors that are locked from the outside but have crash bars on the inside that allow easy exit., Bollard, are short, sturdy posts used to prevent a vehicle from crashing into a secure area., Smart card, Access cards that have encrypted access information. Smart cards can be contactless or require contact., Proximity card, also known as radio frequency identification (RFID) cards, are a subset of smart cards that use the 125 kHz frequency to communicate with proximity readers., Biometric Locks, increase security by using fingerprints or iris scans. They reduce the threat from lost keys or cards., Perimeter barriers, The first measure in physically securing a building is to secure the perimeter and restrict access to secure entry points., Closed-Circuit Television , can be used as both a preventative tool (when monitoring live events) or as an investigative tool (when events are recorded for later playback)., Physical access logs, are implemented by the guards of a facility and require everyone gaining access to the facility to sign in., Physical access controls, can be implemented inside the facility, and can include key fobs, swipe cards, an anti-passback system or badges along with sensors and alarms to detect unauthorized access..

3.1 Physical Security

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