Evin prison

Evin prison, also referred to as Tehran prison, is a detention facility located in Tehran, Iran. It operates as part of the country's prison system under the authority of the Iranian judiciary. The institution primarily holds individuals who have been remanded or sentenced by Iranian courts. Among its inmate population are persons detained for political reasons, including activists, journalists, and critics of the government. The prison's role is to confine those deemed a threat to state security or public order according to Iranian law.

Evin prison has been referenced in multiple reports for systemic human rights violations against its detainees. On August 24, 2021, a hacktivist group gained unauthorized access to the facility's internal closed‑circuit television system. The attackers leaked video recordings that showed guards beating inmates, suicide attempts, and unconscious prisoners being dragged by staff. The footage, timestamped to recent periods, was shared with international media outlets and highlighted the hackers' control over the prison's surveillance infrastructure. While another Iranian hacktivist group amplified the leak, officials did not dispute the authenticity of the depicted abuses. Both the Attorney‑General and the head of the prisons organization announced formal investigations into the incidents following the leak.