Conference's Programme Committee/Reviewer

• ACM MM, ACM Multimedia, 2007 (application track), 2011.
• ASIACCS, ACM Sym. on Information, computer and Communication Security, 2007, 2024.
• BDCAT, IEEE/ACM Int. Conf. on Big Data Computing, Applications & Tech. 2016, 2017.
• CANS, International Conference on Cryptology and Network Security, 2009.
• CNIS, Int. Conf. on Communication, Network and Information Security, 2006.
• CVPR, Computer Vision and Pattern Recognition conference, 2022,
• DRM, ACM Digital Rights Management Workshop, 2007.
• ICICS, International Conf. on Information and Communication Security. 2013.
• ICIP, International Conference on Image Processing, 2014, 2015.
• ICME, Int. Conf on Multimedia & Expo, 2006, 2010, 2011, 2012, 2016, 2018.
• IH, Information Hidings Workshop, 2006 to 2012.
• IH&MMSEC, Information Hidings and Multimedia Security, 2013 to 2016
• IEEE Cloud, IEEE Cloud, 2015, 2016, 2017
• INSCRYPT (formerly CISC), SKLOIS Conf on Information Security and Cryptography, 2006.
• ISC, Information Security Conference, 2011.
• IWSEC, Int. Workshop on Security, 2007, 2008 & 2009.
• MMM, Int. Multimedia Modeling Conference, 2007.
• Pairing, Int. Conference on Pairing-based Cryptography, 2010.
• PSIVT, Pacific-Rim Symposium on Image and Video Technology, 2009.
• SECURECOMM, Int. ICST Conf. on Security and Privacy in Communication Networks, 2010.
• SPIE Security, Steganography, and Watermarking of Multimedia Content, 2007 & 2008.
• STEG, Pacific Rim Workshop on Digital Steganography, 2003.
• USENIX, USENIX Security Symposium, 2024.
• Virtual Goods 2003, 2004 & 2005.

Consultancy

• Huawei Singapore Research Center, Scientific Advisory Committee, 2018 to 2023
• i-Sprint innovation. Providing technical advice on security of QR code. Dec 2017.
• Singapore Accreditation Council, Assessor (Technical Expert) for MTCS (Specification for multi-tiered cloud computing security, SS584) from 2015 to 2025, PIMS (Privacy Information Management System, ISO 27001:2013) and ISMS (Information Security Management System, ISO 27001:2022) from 2023 to 2025.
• China Great Wall Computer (H.K.) Holding Limited via Brenda Chark & Co. Providing technical advices on Import and Export (Strategic Commodities) Regulations. (2012)

Education related consultancy

• Teaching a 2-day workshop in Temasek Defence Systems Institute, NUS, 2018.
• External Examiner, Diploma in Information Security & Forensics, Ngee Ann Polytechnic, 2016-2018.
• Served in the scientific committee of National Olympiad in Informatics (NOI) from 2006 to 2015. Chaired the committee in 2010, 2012, 2013 & 2014. Asia-Pacific Informatics Olympaid (APIO) 2013.
• Member of the validation panel for the Diploma in Infocomm Security Management (DISM) course in Singapore Polytechnic (2006,2012).

Talk/Seminar

• UN-Singapore Cyber Fellowship workshop (jointly organised by NUS, CSA, UN office for Disarmament Affairs), 1-6 Aug 2022.
• Panellist, CSA x ICE71 Cyber Leaders Sharing Session: Future-Proofing Your Organisation, 20 Feb 2022.
• Panellist, Fixing the Secuirty Talent Gap, Acronis #CyberFit Summit Singapore , 17 Feb 2022.
• Panellist, Digitalisation and Cyber Security webinar by The Straits Times, Dec 2020.
• [CALS-TRAIL] Virtual Roundtables on Asian Law #4: COVID-19 and Data Privacy in Asia: Finding the Balance between Public Health and Data Protection, July 2020. video
• Genesis DevCon 2019, IISc, Bangalore, Nov 2019. video
• IPUR Risk Quotient 2019, Tsinghua University, Beijing, 20 Oct 2019.
• Huawei Singapore Forum on Trustworthy Computing, Singapore, May 2019.
• Unhackable hardware for secure data sharing, Annual Meeting of the New Champions, WEF, Tianjin Sep 2018.
• Huaqiao University, 2018.
• Zhejiang University Workshop on Cybersecurity, 27 July 2017.
• Cryptology & Information Security Technology - International Wokshop, organized by the Taiwan Information Security Center, Taipie, 7 Nov 2007.

Media Interview

• (Online article) CNA on passkey, May 2023.
• (Radio, mandarin) Radio station 88.3 Jia on QR code security, 26 Dec 2021.
• (Online article) The Newpaper on Hackers hijacking WhatsApp accounts by asking for security codes, Nov 2020.
• (Online article) Interviewed by Zaobao on issues in mobile security (Mandarin), 13 Nov 2019.
• (Online article) Interviewed by The Straits Times on Darkweb, 5 May 2019.
• (TV, Mandarin) Channel 8 News on Cloud technologies, 14 October 2018.
• (TV, Mandarin) Channel 8 News, on SingHealth leak incident, 29 July 2018.
• (Radio, live, Mandarin) Radio station 95.8 on issue in blockchain, 30 Apr 2018.
• (Radio, live, Mandarin) Radio station 95.8 on issue in cybersecurity, 12 Sep 2017.
• (TV, Mandarin) Channel 8 News on Cyber-terrorism, 11 Jun, 2017.
• (Online article) The Straits Times, Tracking apps can also help save lives? 2 Apr, 2017.
• (Online article) The New Paper, Watch your ATM card in shops, eateries, 9 Jan, 2012.
• (TV, live, Mandarin) MediaCorp Good Morning Singapore on wireless security, 11 Jan 2007.