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Re:An Implementation of Tempest in GNU Radio by sandworm101 on Wednesday May 13, 2020 @08:03PM (#23173403)
TEMPEST was also the codename of the NSA project for leveraging emissions. And it has become code for machines modified to protect against such things. So a "tempest computer" (if you ever see one) is a computer hardened against emissions.
Re:An Implementation of Tempest in GNU Radio by na85 on Wednesday May 13, 2020 @08:19PM (#23173538)
They're stupid expensive, those machines. A lot of places are finding that it's less expensive to maintain an EMSEC zone and run COTS equipment.
Re:An Implementation of Tempest in GNU Radio by sandworm101 on Wednesday May 13, 2020 @08:52PM (#23173839)
I've heard about them being used for an opposite reason. Rather than for security, they are used in places where you don't want to risk them interfering with other equipment, like a room with radar equipment that might be sensitive.