(Signals Intelligence) Information that contains (either individually or in combination) communications intelligence (COMINT), electronics intelligence (ELINT) and foreign instrumentation signals intelligence (FISINT), however transmitted.
Airborne Signals Intelligence Systems
Signals intelligence; the amalgamation of COMINT and ELINT into one unit of intelligence gathering dealing with all electronic emanations and transmissions.
See Signals Intelligence.
Signals intelligence. The primary task of GCHQ.
Intelligence gained by intercepting electronic communications.
The interception and analysis of electromagnetic signals. Also, Intelligence recovered from intercepted and decoded transmissions.
On POSIX-compliant platforms, SIGINT is the signal thrown by a computer program when a user wishes to interrupt a process. In source code, SIGINT is a symbolic constant defined in the header file signal.h.