EC or Exigent Circumstances – An emergency situation requiring swift action to prevent imminent danger to life or serious damage to property, or to forestall the imminent escape of a suspect, or destruction of evidence.
EA Emergency Authority
EAD Executive Assistant Director
EC Electronic Communication
ECPA Electronic Communication Privacy Act
ECS Electronic Communication Service
ELSUR Electronic Surveillance
EO Executive Order
- ERS ELSUR Records System – The Electronic Surveillance (ELSUR) Record keeping System(ERS) was developed to track information related to individuals and entities that have been the targets of electronic surveillance coverage sought, conducted, or administered by the Federal Bureau of Investigation (FBI) pursuant to a court order, consensual monitoring, or other authority.
- ESN Electronic Serial Number
- ESU Electronic Surveillance Unit