Unit 8200 is the Israel Defense Forces' elite signals intelligence (SIGINT) and cyber warfare unit, specifically an Israeli Intelligence Corps unit responsible for clandestine operations, collecting signal intelligence, code decryption and code-breaking, counterintelligence, cyberwarfare and cyber operations, military intelligence, surveillance, and electronic warfare. Often referred to as the Central Collection Unit of the Intelligence Corps or the Israeli SIGINT National Unit (ISNU), it functions subordinate to Aman, the IDF's military intelligence directorate, and is considered Israel's equivalent to the United States' National Security Agency (NSA), sometimes called the 'Israeli NSA'. The unit is renowned for its rigorous training programs that develop top cyber and tech talent, producing a pipeline of leaders who transition into Israel's high-tech sector and become tech entrepreneurs, particularly in cybersecurity. Alumni have founded major cybersecurity firms like Check Point Software Technologies and contributed to companies such as NSO Group, significantly influencing Israel's cybersecurity and tech sectors.

The unit has been involved in high-profile operations, such as the development and deployment of cyber weapons like Stuxnet, targeted at Iran's nuclear program, in collaboration with allies including the United States. Its operations extend to countering threats from groups like Hezbollah and the Palestinian Authority, while fostering hidden ties with foreign intelligence agencies such as the CIA. Unit 8200's activities have sparked controversies, including allegations of unlawful surveillance of Palestinian populations and involvement in targeted assassinations, leading to criticisms from human rights organizations like Amnesty International. NSO Group, founded by alumni, has drawn international scrutiny for its Pegasus spyware.

As a secretive military entity, Unit 8200 maintains a low public profile, with its personnel often serving mandatory conscription terms before transitioning to elite tech roles. Its influence extends beyond military spheres into global tech and influence networks, raising ethical questions about privacy, cyber ethics, and international law.