tempest=storm

The TEMPEST Certification Program (TCP) consists of three closely related NSA programs: the Certified TEMPEST Products Program, the Certified TEMPEST Test Services Program, and the Zoned Equipment Program. Each of these programs involves partnerships with industrial companies.

https://apps.nsa.gov/iaarchive/programs/iad-initiatives/tempest.cfm

While much of TEMPEST is about leaking electromagnetic emanations, it also encompasses sounds and mechanical vibrations. For example, it is possible to log a user's keystrokes using the motion sensorinside smartphones. Compromising emissions are defined as unintentional intelligence-bearing signals which, if intercepted and analyzed (side-channel attack), may disclose the information transmitted, received, handled, or otherwise processed by any information-processing equipment.

https://en.m.wikipedia.org/wiki/Tempest_(codename)