Wissam Adnan al-Hassan (Arabic: وسام عدنان الحسن, romanized: Wisām ‘Adnān al-Ḥasan; 11 April 1965 – 19 October 2012) was a brigadier general at the Lebanese Internal Security Forces (ISF) and the head of its intelligence-oriented Information Branch.

[3] He worked as Hariri's head guard detachment from June 2001 to Summer 2004,[4] and also, promoted to the rank of lieutenant colonel in this period.

[4][5] Al-Hassan served under the ISF's director-general, Ashraf Rifi, who is one of the board members of the Prince Nayef University for Security Studies.

[6] Al-Hassan achieved significant improvements in the capabilities of the information branch in terms of both domestic criminal matters and security issues.

One of the information branch's tasks was dismantling the network of Israeli spies in Lebanon, and this led to the arrest of over 100 individuals suspected of collaborating with Israel.

In August 2012, al-Hassan made headlines as the key player in an investigation that led to the arrest of former information minister Michel Samaha,[8] who was charged with transporting explosives into Lebanon with the help of the Syrian Security Chief Ali Mamlouk, in an alleged attempt to destabilize the country.

[5][7] Al-Hassan had evidence of direct links between Samaha and senior Syrian political and intelligence aides, including top adviser to President Assad, Butheina Shaban.

[17][23] Lebanese president Michel Suleiman awarded al-Hassan the National Order of the Cedar in Grade of Grand Officer at the ceremony.