Internal Security Service

Internal Security Service (ISS; Arabic: جهاز الأمن الداخلي‎‎), is the national security intelligence agency of Oman. The agency focuses solely upon domestic security while foreign intelligence operations is handled by the Royal Office, which controls external security and coordinates all intelligence and security policies.

The stated overall purpose of ISS is to investigates all matters related to internal security.

In July 2015, after hacking team(which provide programs that spy on their citizens) got hacked, ISS (Oman intelligence) was revealed as one of the customers which deals with the company.