Hui Leong holds a BSc Computer Science. He is a Learning Tree International Certified Professional For Internet and Intranet, and Java. He was involved in the research and development of state-of-the-art encryption technologies. He has been involved in security training since 2001. He is a regular speaker at computer security seminars where he shares his views and knowledge with others. He provides consulting services to various government ministries in Singapore on security matters. He has also developed many security products.