8. Conclusion

The parasitic leakage of confidential information by compromising electromagnetic signals, and the capture of these signals by hostile individuals, constitute the TEMPEST (electromagnetic anti-compromission) risk. TEMPEST is not one of the areas aimed at attacking encryption systems; the TEMPEST risk is associated with a search for parasitic signals unintentionally emitted outside the ZST of the system to be protected.

The creation of parasitic signals, their coupling, the analysis and some of the measurements of these electromagnetic signals are all part of the field of EMC in parasitic emission. Skills, training, methods, tools, solutions and EMC standards for conducted, radiated or radio emission are required to deal with TEMPEST.

However, the TEMPEST risk differs from emission EMC problems in the following ways:

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