Ensign Leadership

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.

Charles Ng is the Executive Vice President of Group Business at Ensign InfoSecurity.

In his role, he drives the growth of Ensign’s cyber security services in the region and internationally. 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.

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.

Tan Ah Tuan is the Executive Vice President of Labs at Ensign Infosecurity. 

 Prior to joining Ensign, Ah Tuan held leadership roles with Singapore’s Defence Science and Technology Agency (DSTA). He was DSTA’s Group Technology Officer, Director Cybersecurity and Director Infocomm Infrastructure. As the Group Technology Officer, he was responsible for the management of R&D projects, the competency development in emerging technologies, as well as the security of DSTA’s data, systems and projects. As Director Cybersecurity, he led the development of cyber defence architecture and solutions for various C4IT systems and networks in MINDEF (Ministry of Defence) and the SAF (Singapore Armed Forces). He was instrumental in building up DSTA’s competencies to support the growing demands for cyber solutions in defence. 

 Ah Tuan was awarded the Defence Technology Prize Individual (Engineering) in 2014 for his contribution to Singapore’s defence.  He was also awarded the Public Administration Medal – Silver and the Public Administration Medal – Bronze. 

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.

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.