Tammie Tham is the Group CEO of Ensign InfoSecurity (Ensign), Asia's largest pure-play cybersecurity services firm.

Tammie is an industry veteran with many years of experience in the cybersecurity field. Prior to Ensign, she was the Chief Executive Officer and Founder of Accel Systems & Technologies (Accel), a cybersecurity systems integrator.

Tammie has extensive experience running cyber businesses across the ASEAN region. She previously led the APAC Cyber Security Business at BT Frontline, a subsidiary of BT Global Services, where she was responsible for expanding its cyber business in ASEAN and building a footprint in Asia Pacific. Before that, Tammie was leading the ASEAN Security Practice at IBM.

Tammie is on the executive committee of SGTech, Singapore’s premiere infocomm industry association. She also sits on the Board of MediaCorp and the Singapore Institute of Technology. She is the Co-chair of the Cyber Security Agency's Cyber Security Awareness Alliance, which aims to enhance awareness and promote adoption of essential cybersecurity practices.