He also took part in the National University of Singapore's Lee Kuan Yew School of Public Policy's Executive Development Programme for Senior Government Officers (EDPSGO).

Subsequently, on 31 July 2021, he was named permanent secretary (Security, Enforcement and Law) in the PMO, in addition to his role as Director of ISD.

[2] Through the United Nations Office on Drugs and Crime (UNODC), Sufian received facial recognition hardware and software on 14 March 2022, from Japan's Ambassador Meada.

[3] During a cabinet reshuffle on 7 June 2022, Sufian was named Deputy Minister in the PMO by order of Sultan Hassanal Bolkiah.

[2] On 16 March 2023, at the 4th Sub-Regional Meeting on Counter Terrorism and Transnational Security (SRM) in Melbourne, he led the delegation from Brunei during the conference.