State Security Service (SSS) is the primary domestic intelligence agency of Nigeria. It is primarily responsible for the gathering of intelligence within the country and for the protection of senior government officials, particularly the President and state governors. It is one of three successor organisations to the National Security Organization

National Security Organization

The National Security Organization of Nigeria was established in 1976 by the military regime of Olusegun Obasanjo, after the failed Dimka coup--which claimed the life of former Head of State Murtala Mohammed...

 (NSO), dissolved in 1986. The SSS has come under repeated criticism from both within Nigeria and without charging it as an instrument of political repression, used by whatever government is then in power to harass and intimidate political opponents.