Tammie Tham is the Group Chief Executive Officer at Ensign InfoSecurity.
Tammie is an industry veteran with 20 years of experience in the cybersecurity field. Prior to Ensign, she was the Chief Executive Officer and Founder of Accel Systems & Technologies.
She serves on the Board of Trustees of the Singapore Institute of Technology and the Mediacorp Board. She is also the Honorary Secretary of SGTech and the Co-Chair of the Cyber Security Awareness Alliance.
Executive Vice President, International Business and Consulting
Executive Vice President, International Business and Consulting
Charles Ng is the Executive Vice President of International Business and Consulting at Ensign InfoSecurity.
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 serving in the government, Charles was involved in the formation of the Cyber Security Agency of Singapore.
Diana Tan is the Executive Vice President of Corporate and Chief Legal Counsel at Ensign InfoSecurity Group.
Prior to joining Ensign, she was Senior Vice President and Head of Legal in Pavilion Energy and Pavilion Gas, and Head of Legal in Singapore Technologies Electronics. In Singapore Technologies Electronics, 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. She 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.
Simon Cheong is the Executive Vice President of Systems Integration at Ensign InfoSecurity.
In his role, he’s responsible for driving the growth and operations of the Systems Integration business unit. He has over 18 years of experience in enterprise, strategic sales, channel and customer account management in the areas of security, software and services.
Prior to joining Ensign, Simon headed the channel sales business at McAfee in the Asia Pacific region. He also previously held various management and sales roles at RSA, Cisco, CA Inc and Singapore Computer Systems covering the region.
Chief Information Officer and EVP, Managed Security Services
Chief Information Officer and EVP, Managed Security Services
Steven Ng Yong Teng is the Chief Information Officer at Ensign InfoSecurity.
As the CIO, Steven provides the vision, leadership and technology governance to support Ensign’s long-term business growth in the areas of enterprise-wide IT, digital transformation and cybersecurity.
Prior to this, Steven held leadership roles with the Singapore Ministry of Defence, including serving as the Director of Threat Intelligence Group in the Defence Cyber Organisation, and Head of various technical operations and strategic analysis groups
in the Military Intelligence Organisation. He has extensive experience in leading large-scale technical operations and building new start-up teams.
Cat So is the General Manager of Hong Kong at Ensign InfoSecurity.
Cat oversees Ensign’s business in Hong Kong, responsible for driving business growth and operations. She has over 10 years of experience in the enterprise software industry, and has deep expertise in strategic sales and business development in Hong
Kong and Taiwan.
Prior to joining Ensign, Cat was the Country Manager at Darktrace for Hong Kong, Taiwan, and the Philippines. During her tenure, Cat played an instrumental role in accelerating the company’s expansion in these markets. She also previously held senior
roles at Master Concept, Automated Systems, and EMC.
Sam Goh is the General Manager of Korea & Japan at Ensign InfoSecurity.
Sam is based in Seoul, and spearheads Ensign’s growth in Korea and the rest of the North East Asia Region. Sam was formerly Booz Allen Hamilton’s Lead Associate for the Cyber practice for ASEAN, IBM Security Services’ Senior Managing
Consultant for Consulting & Service Integration (C&SI), Practice lead for GRC & Privacy for APAC, and British Telecom’s Principal Consultant for Information Security Advisory Services for EMEA.
Prior to Consulting, Sam was from the Banking & Financial Services industry. He was the Information Security Manager at ANZ Banking Group HQ in Melbourne; Information Risk Manager in Barclays Plc HQ in London; and Information Security Consultant for
Co-operative Financial Services (CFS) HQ in Manchester.
Chan Kok Leong is the Vice President of Engineering at Ensign InfoSecurity.
At Ensign, Kok Leong leads a team of technical specialists and engineers that provide cybersecurity services, from purpose-built Security Operation Centres that continually deal with emerging threats and vulnerabilities, to controls and processes created
to protect customers’ assets. As the lead Cyber Security Solution Architect at Ensign, Kok Leong is responsible for the development, integration and delivery of cyber security services across a variety of sectors.
Prior to this role, Kok Leong was the Director of Technology and Chief Architect at Accel Systems & Technologies. Building his craft throughout his career, Kok Leong is an expert in cybersecurity and very experienced in designing and implementing
cybersecurity infrastructure, and advising clients on best practices and compliance.
Lynn Tan is the Vice President of Sales at Ensign InfoSecurity
Lynn leads the enterprise sales team at Ensign, and drives the sales strategies for customers across industries. She brings with her over a decade of experience in enterprise sales with niche expertise in the public sector. Passionate about cyber, she was heavily involved in multiple projects that required complex solution selling, implementing and securing clients’ infrastructure, and in the process, helping many organisations in their digital transformation journey.
Prior to Ensign, Lynn was one of the pioneers who set up Accel Systems & Technologies in 2012, and played a pivotal role in growing the company. During her tenure, she held several roles, accumulating a diverse set of experiences in sales, marketing, operations, and finance.
Roland Lau is the Vice President of Managed Security Services (MSS) at Ensign InfoSecurity.
Roland is responsible for the service transformation of the MSS business unit, and the provision of intelligence-led advanced detection, as well as threat hunting and response services. He oversees Ensign’s Security Operation Centres (SOCs), and integrates the expertise of diverse teams, including service delivery management, device management, governance, and DevSecOps teams to deliver a comprehensive suite of services to customers.
Prior to Ensign, Roland was the Head for IT Security Operations at Keppel Enterprise Services where he led the set up and implementation of the IT-SOC, and upskilled IT support personnel through trainings on vulnerability assessment and incident response capabilities.
Mr Lee Fook Sun joined the Ensign’s board in October 2018. He is the Chairman of Ensign InfoSecurity, and was first appointed as a Board member of Quann World in August 2017. He is the Chairman of the Building and Construction Authority. He sits on the boards of SMRT Corporation Ltd and Great Eastern Holdings Limited. He is also the Corporate Advisor to Temasek International Advisors Pte. Ltd.
Mr Lee was appointed Deputy CEO of Singapore Technologies Engineering Ltd in December 2014, a role he held concurrently with President of Defence Business for the ST Engineering Group. He joined Singapore Technologies Electronics Limited in December 2000,
and was the President of ST Electronics from 15 August 2009 to 31 December 2016. He has been with ST Engineering Group for 17 years until he retired on 30 June 2017.
Prior to joining ST Electronics, he served in the Ministry of Defence (MINDEF) as Director of Joint Intelligence Directorate from 1996 to 2000. Over the years while serving in MINDEF and the Singapore Armed Forces, he held various positions such as the
Director of Military Security Department and Assistant Chief of General Staff (Logistics). During his career in the Singapore Armed Forces, he was awarded the Public Administration Medal (Military) for the Gold and Silver categories and the SAF Long
Service & Good Conduct Medal (22 years). He held the rank of Brigadier-General when he retired from active military service.
Mr Lee holds a Bachelor of Arts (Honours) and a Master of Arts (Engineering Science) from the University of Oxford (UK), and attended the Stanford University Executive Programme. He was conferred the Honorary Fellowship from the ASEAN Federation of Engineering
Organisations (AFEO), in recognition of his contributions to the engineering profession and industry.
Mr Yap Chee Keong joined the Ensign’s board in September 2019. He is an independent non-executive director of Olam International, Sembcorp Industries, Shangri-La Asia, Certis Cisco Security, Citibank Singapore, Ensign InfoSecurity and Mediacorp. He is the chairman of the audit committee or audit & risk committee of these companies.
Mr Yap was the Executive Director of the Straits Trading Group and the Chief Financial Officer of the Singapore Power Group. He had also worked in various senior management roles in multinational and listed companies.
He was previously the chairman of CityNet Infrastructure Management (the trustee manager of NetLink Trust) and Singapore District Cooling.
He was a board member of the Accounting and Corporate Regulatory Authority and a member of the Public Accountants Oversight Committee. He was a member of the MAS/SGX/ACRA Work Group to review the Guidebook for Audit Committees in Singapore and the
MAS/SGX/ACRA/SID Review Panel to develop a Guide for Board Risk Committees in Singapore.
Mr Yap holds a Bachelor of Accountancy from the National University of Singapore and is a Fellow of the Institute of Singapore Chartered Accountants, a Fellow of CPA Australia and a Fellow of the Singapore Institute of Directors.
Mr Yap is the Chairman of Ensign’s Audit and Risk Committee.
Mr Teo Ek Tor joined the Ensign's Board in October 2018. He is the Chairman of PrimePartners Group Pte Ltd, a financial services group, and Aris PrimePartners Asset Management Pte Ltd, a joint venture asset management company based in Singapore.
Mr Teo has vast experience in investment banking, asset management and financial services in Asia, and brings with him in-depth financial and analytical expertise. He had contributed to, and been instrumental in the development of two major regional investment banking groups – Morgan Grenfell Asia (1980-1993) and BNP Prime Peregrine (1997-1999). Mr Teo held senior executive positions within the Morgan Grenfell Asia group and was the Regional Managing Director of BNP Prime Peregrine (Singapore) Ltd.
He holds a Bachelor of Arts (Honours), with a major in Business Administration, from the University of Western Ontario, Canada.
Mr Khoo Boon Hui joined the Ensign’s board in October 2018. With more than 30 years of experience in law enforcement and a recognised expert in organisational management, Mr Khoo began his career in the Singapore Police Force in 1977 and became its Commissioner from 1997 to 2010. He also served as President of INTERPOL from 2008 to 2012 and Senior Deputy Secretary of Singapore’s Ministry of Home Affairs (MHA) from 2010 to 2014.
In 2013, Mr Khoo was appointed Director of the Institute of Leadership and Organisation Development, Civil Service College. Upon his retirement from the Government service in 2015, Mr Khoo served as Senior Advisor of the MHA, and was re-designated a Senior
Fellow in 2016. He is also a Senior Fellow of the Civil Service College and the Home Team Academy.
Mr Khoo is Chairman of the Cybersecurity Advisory Group to the Minister-in-charge of Cybersecurity, Deputy Chairman of the Singapore Quality Award Governing Council and member of the Global Commission on the Stability of Cyberspace. He is also a board
member of Singapore Health Services Pte Ltd, MOH Holdings, Certis, Temasek Foundation International and Casino Regulatory Authority of Singapore. In addition, Mr Khoo is an advisor to entities in the field of banking, technology, cybersecurity, healthcare
as well as INTERPOL.
Mr Khoo holds a Bachelor in Engineering Science and Economics from Oxford University, UK, and a Master in Public Administration from Harvard Kennedy School, USA.
Mr Yeoh Keat Chuan joined the Ensign’s board in October 2018. He was Ensign’s interim Chief Executive Officer from its inception till 30 September 2019.
Mr Yeoh is currently Senior Managing Director, Enterprise Development Group at Temasek International. He joined Temasek in October 2017. Prior to that, Mr Yeoh was Managing Director of the Singapore Economic Development Board (EDB), the lead government
agency for industry development and investment promotion. He spent a number of years in the US while he was with the EDB.
Mr Yeoh is a Glaxo-EDB scholar who graduated with a Masters of Engineering (Chemical Engineering), from Imperial College of Science, Technology & Medicine. He also attended Stanford University’s Graduate School of Business Masters in Management
Mr Yeoh is a member of Ensign’s Audit and Risk Committee.
Mr Dennis Chia joined the Ensign's Board in July 2019. He oversees StarHub’s financial health, develops and executes strategies through financial management and ensures that business decisions are financially sound. He is also responsible for driving
merger and acquisition activities as well as procurement, supply chain and enterprise risk management.
Prior to joining StarHub, Mr Chia was the Senior Vice President and Chief Financial Officer (CFO) of STATS ChipPAC (Worldwide), a leading provider of advanced semiconductor packaging and test services. He was also with Lear Corporation as its Vice President
of Finance, Asia Pacific Operations and CFO of Behringer Corporation and Frontline Technologies Corporation.
Mr Chia is a Chartered Accountant and currently a council member with the Institute of Singapore Chartered Accountants. He holds a Bachelor of Accountancy (Honours) from the National University of Singapore and a Master of Business Administration from
the University of Hull, United Kingdom.
Mr Chia is a member of Ensign’s Audit and Risk Committee.
Ms Rashmy Chatterjee joined the Ensign’s board in March 2020. She is the CEO of ISTARI - the Global Cybersecurity platform established by Temasek to help clients manage their digital risk in times of rapid digitalisation. It harnesses the collective power of the world’s leading cybersecurity companies, people and knowledge to work alongside clients to secure their business growth and earn digital trust.
Ms Chatterjee has held a number of global sales and marketing leadership roles in her career. She spent over two decades at IBM, where her most recent positions included global sales leader for IBM Security and Chief Marketing Officer for IBM NA. Prior to IBM, Ms Chatterjee served in the Indian Navy as the Deputy Director of Naval Design. She was the first female engineer to join the Navy and was commended by the President of India for her work in establishing the Indian Naval CAD/CAM centre.
Ms Chatterjee is passionate about building a culture of long-term client relationships and developing talent. She is an advocate for women in technology and sits on a number of boards. She is also a Fellow of the International Marketing Academy.
Ms Chatterjee graduated from the Indian Institute of Technology, Kharagpur. She and her husband live in London.
Ms Veronica Lai joined the Ensign's Board in October 2018. She is responsible for StarHub’s Corporate Communications, Investor Relations, Legal, Corporate Secretariat, Regulatory and Sustainability functions.
Prior to this role, Ms Lai was the Group’s General Counsel and Company Secretary. Before joining StarHub, she practised law at Rajah and Tann for six years.
Ms Lai is a member of the Management Committee of the Global Compact Network Singapore. She was listed in Legal 500’s GC Powerlist for 2017, 2018 and 2019. She also received the Asian Company Secretary 2013 Award for Singapore by Corporate Governance
Asia and was recognised as one of Asia Legal Business’ Top 25 in-house counsels in Asia for 2010. Ms Lai holds a Bachelor of Laws (Honours) from the National University of Singapore
Mr Chong Siew Loong joined the Ensign's Board in July 2019. As StarHub's Chief Technology Officer, he provides leadership to maintain a robust and efficient network to support StarHub's multiple lines of business. He is also responsible for establishing
the company's technical vision and leading all aspects of technology development.
Mr Chong was one of the pioneers in StarHub's formative years when the company won the licence to operate as a telco in 1998. He also set up and managed the Network and Systems Division at StarHub's wholly-owned subsidiary Nucleus Connect.
Mr Chong received the 40 Under 40 award from the Global Telecoms Business in 2011. He holds a Bachelor of Electronics Engineering from the University of Southampton, United Kingdom.