Introduction To gain high secure, a system must be concerned about the interference of natural matters too. The natural matters which affect the security of a computer system are called as ‘Environmental Threats’. Some of the e xamples for environmental threats can be categorized as extreme cold,heat,humidity,dust,rainfalls,earthquakes, floods, fires, hurricanes, snow, ice, mud slides and sink holes. Methods of mitigating Environmental Threats · Air filters should remove fine dust particles because outdoor dust is brought in on clothes and shoes · Air filters must be cleaned or replaced in a regular schedule. · Periodically air heating equipment should be turned on, even it isn’t needed. This is to incrementally burn off that would other wise accumulate and be converted to an appreciable amount of smoke, when the equipment is activated for the first time after a long time period. · Water detectors should be placed above and below a raised floor to monitor the rise of water level. ·...