Ensign Leadership

Charles Ng is currently the Executive Vice President (International & Professional Services) in Ensign InfoSecurity, one of Asia’s largest integrated pure-play cybersecurity firms.  In his role, he drives the growth of Ensign’s cyber security services in the region. This includes providing the Boards and Management of multinational companies with advice, as well as bespoke solutions to help resolve their cybersecurity challenges.  

Prior to this, Charles started and headed the Booz Allen Hamilton Cyber Security practice in Asia Pacific.  While in government, Charles was involved in the formation of the Cyber Security Agency of Singapore (CSA).  

Charles studied in Oxford University and the Lee Kuan Yew School of Public Policy.  

Dr Lim Woo Lip is the Executive Vice President (Technology & Capabilities) in Ensign InfoSecurity, one of Asia’s largest integrated pure-play cybersecurity firms.  

Prior to this role, Woo Lip was the Vice President of Data Analytics and Cyber Security at StarHub. He led StarHub’s development in big data analytics and cyber security capabilities.  

As a firm believer in building the local ICT ecosystem for long term sustainability in Singapore, Woo Lip has helped to establish links between government agencies, institutes of higher learning (IHLs) and commercial companies for collaborations and joint developments in data analytics and cyber security. 

Prior to joining StarHub, Woo Lip worked in the Ministry of Defence (MINDEF) and the Singapore Armed Forces (SAF) for 25 years. His last post was Director of Policy and Plans in MINDEF from 2012 to 2013. Over the years in MINDEF and the SAF, he held various positions such as Head of Technical Branch in Joint Service and Deputy Director of Infocomm Infrastructure Solutions in Centre for Strategic Infocomm Technologies (CSIT). Woo Lip was also the Lab Head of Advanced Communications Lab and Wireless Communications Lab in CSIT from 2004 till 2009. Under his leadership, the teams at Research Labs had achieved many breakthroughs in infocomm security technologies that were subsequently operationalised. He was awarded the National Day Public Administration Medal (Bronze) in 2012.  

Woo Lip is currently a member of the Advisory Committee at Republic Polytechnic’s (RP) School of Infocomm. In this role, he has facilitated RP’s industry collaborations on data analytics and cybersecurity. He was conferred the Singapore Computer Society IT Leader Professional of The Year Award in 2017 in recognition of his contributions to the infocomm technologies and media community in Singapore. He was also conferred the Leader Award at the Inaugural Cyber Security Awards 2018 organised by Association of Information Security Professionals, for his contributions to Singapore’s cybersecurity ecosystem.  

Woo Lip received the Defence Technology and Training Award (DTTA) and graduated from the University of Bath (UK) with a Bachelor of Engineering (1st Class Honours) in Electronic and Communications Engineering. He was later awarded the DTTA (Postgraduate) and obtained his Doctor of Philosophy (Ph.D.) in Electrical Engineering (Mobile Communications) from University of Surrey (UK). 

Tammie Tham is the Executive Vice President (Enterprise and Services) in Ensign InfoSecurity, one of Asia’s largest integrated pure-play cybersecurity firms, headquartered in Singapore with offices in Malaysia and Hong Kong.  

She oversees and manages the Enterprise business portfolio at Ensign InfoSecurity, which provides bespoke cybersecurity services that include professional services, designing and building enterprise-wide cybersecurity solutions, and managed security services. 

Prior to this role, Tammie was the Chief Executive Officer and Founder of Accel Systems & Technologies (Accel), a cybersecurity systems integrator. Tammie has more than 18 years of experience in cybersecurity and has held management positions at large global and regional IT Services companies. She has extensive experience in the ASEAN region across various sectors – government, health care, financial services, telecommunications, transport and utilities. 

Before founding Accel, Tammie led the APAC Cyber Security Business Unit at BT Frontline, a subsidiary of BT Global Services. She was responsible for expanding its cyber business in ASEAN and building a footprint in Asia Pacific. Prior to this, she led the ASEAN ITS Security Practice at IBM. She has also held sales management and leadership roles at Frontline Solutions and Netrust. 

Outside of Ensign InfoSecurity, Tammie is an Ex-Co Member of SGTech (formerly known as SiTF), Singapore’s premiere infocomm industry association. She’s also the Chairman of its Cyber Security Chapter. Tammie is an active member of the Cyber Security Agency’s Cyber Security Awareness Alliance, which was formed to build a positive culture of cyber security in Singapore, and promote and enhance awareness and adoption of essential cyber security practices. 

Diana Tan is Executive Vice President, Corporate and Chief Legal Counsel of Ensign InfoSecurity Group.  

Prior to joining Ensign InfoSecurity Group, she was Senior Vice President and Head of Legal in Pavilion Energy Pte Ltd and Pavilion Gas Pte Ltd; and Head of Legal in Singapore Technologies Electronics Limited. In Singapore Technologies Electronics Limited, she also held the additional portfolio of Business Development, looking into new business and investments.    

Diana started her career as a practicing corporate lawyer focusing on mergers and acquisitions, corporate restructuring and transactional works with emphasis on tax and tax related issues.   

Diana qualified as a Barrister-at-law at Lincoln’s Inn, London, United Kingdom and was called to the English Bar in 1992.  She was also admitted to the Singapore Bar as an Advocate and Solicitors of the Supreme Court of Singapore in 1994.