Standard property insurance policies exclude many of the perils associated with losses involving software and data processing hardware. These include electrical disturbances and changes in temperature or humidity. Moreover, the coverage for software is limited to the replacement of blank tapes or CDs and business interruption is limited to 60 days.Purchase of an Electronic Data Processing (EDP) policy can fill these coverage gaps. Most policies include coverage for electrical surges, mechanical breakdown, and changes in temperature and humidity. Extra expense and business interruption due to a halt in data processing is also available.