Electromagnetic Interference (EMI) definition in Computer Security terms:
Definition(s): An electromagnetic disturbance that interrupts, obstructs, or otherwise degrades or limits the effective performance of electronics/electrical equipment.
Source(s): NIST SP 800-101 Rev. 1
NIST SP 800-72
Electromagnetic emissions from a device, equipment, or system that interfere with the normal operation of another device, equipment, or system.
Source(s): FIPS 140-2
reference: CSRC Glossary