Hassan Hattab (a.k.a. Abu Hamza; born 14 January 1967) is the founder and first leader of the Algerian Islamist rebel group Salafist Group for Preaching and Combat (GSPC).
Born in Rouiba on 14 January 1967, Hattab received religious education in his howntown. Later he was trained as a paratrooper in his national service in the Algerian army, in the course of which he met his future lieutenants Amari Saïfi and Abbi Abdelaziz. After leaving the army in 1989, he became a mechanic. He joined the most radical of the Islamist guerrilla movements, the Armed Islamic Group (GIA), after the cancellation of the 1992 elections. In 1994, he became "amir", or chief, in charge of what it called the "second zone" (Kabylie and the eastern part of the capital). As such, he notably was the signer of the document announcing that the GIA had assassinated the anti-religious Kabyle singer Lounes Matoub.
Hattab left the GIA in 1996, rejecting its takfirist policy of massacring Algerian civilians en masse and accusing it of being infiltrated by the Algerian secret services. He formed a separate group, the Salafist Group for Preaching and Combat (GSPC), the same year. However, there is another report giving the year of faoundation as 1998. The main objective of the GSPC, like the GIA, was to establish an Islamic state in Algeria, rejecting the current secular government.
The GSPC was mainly active in the east of the country, notably in the forests of western Kabylie such as Mizrana, Boumehni, Sidi Ali Bounab, and Takhoukht. The GSPC soon eclipsed the GIA as the latter was torn apart by internal purges and army victories. Hattab lost his leadership position and on 23 October 2003, Nabil Sahraoui took over the group. This was as a result of Hattab's view that reconciliation with the government should be encouraged. A "repentant" ex-member reported that Hattab was killed by members of his own organization in summer 2003. However, his successor, the then GSPC leader Sahraoubi reported that Hattab had resigned "of his own accord".