109 is mounted outside enclosure 99 and controls valve 101 through signal line 95 in the event of fire thermostat 109 detects rising temperature and closes valve 101 as a result coolant no longer circulates and therefore cannot carry thermal energy from a fire to heatsink 107 which might overheat components of data storage system 111 if thermostat 113 senses a change in coolant temperature it adjusts valve 101 to compensate for the temperature change those with skill in the art will recognize that a temperature controller for cooling fluid is old in the art and that this portion of the present invention may be implemented with little difficulty by those with skill using well known equipment and techniques it will be apparent to those with skill in the art that there will be many alterations that might be made in the embodiments of the invention described herein without departing from the spirit and scope of the invention fig5 is a schematic representation of internal elements of a computer system according to the present invention comprising a password diverter computer 121 comprises but is not limited to a cpu 131 a main computer bus 127 a keyboard 139 a password diverter 137 a keyboard interpreter 135 a disk controller 133 a local hard disk 141 a disk operating system 125 and a boot rom 129 in the event a snooping routine is planted in the computer system it will typically be designed to read keyboard entries from main computer bus 127 during at least the time frame that a password might be sought by execution of a boot routine and to store the result in memory space typically little used memory space for later retrieval to intercept and divert keyboard entries during at.