 Signals intelligence by alliances, nations and industries

Signals intelligence (SIGINT) refers to the collection, analysis, and exploitation of signals for the purpose of gathering intelligence. This includes communications intelligence (COMINT), which focuses on intercepting and analyzing private communications, and electronic intelligence (ELINT), which pertains to non-communication signals such as radar emissions. SIGINT is a crucial component of national security and military operations, providing insights into enemy capabilities, intentions, and activities.