Foo Siang-tse
Foo Siang-tse

Chief Executive Officer

Siang-tse is responsible for establishing Quann as Asia's leading cyber security services provider. He drives the growth and development of all aspects of Quann's business, which includes introducing new products and services, establishing partnerships and opening new markets. Siang-tse also heads the Cyber Security Group within Certis Group, overseeing all cyber security-related businesses.

Prior to this, Siang-tse supported the Group CEO in formulating the Group's strategy and business plans to deliver growth and international expansion for Certis Group.

Siang-tse was previously part of the Administrative Service in the Singapore Government. His last appointment was as Senior Director of Policy Development at the Ministry of Home Affairs. In this capacity, he was responsible for legislative review and policies relating to crime, cybersecurity, law and order, as well as counter-terrorism. He has also served in various management roles in areas relating to healthcare, energy and treasury within the Singapore Government.

Siang-tse holds a Bachelor of Arts in Economics from Cambridge University and a Master of Arts in International Policy Studies from Stanford University. He was also a Sloan Fellow at the Stanford Graduate School of Business where he received a Master of Science in Management.


John Yong
John Yong

Principal Cyber Consultant

John is responsible for driving the cyber business in regions across Singapore, Malaysia, Hong Kong as well as new markets. He also leads the development of strategy and programme to ensure information assets and technologies are adequately protected.

He was also the former Head of Professional Security Services, providing cyber and physical security consultancy.

Prior to joining Quann, John held management and consulting roles in multinational corporations and government agencies in the region. He was a former Director at IDA's Information Security Group and Chief Security Advisor to the largest telecommunications group in the Philippines.

John started his career with the Ministry of Defence and later joined the then-National Computer Board in 1991 to head its IT Security Department.

A seasoned infocomm security professional with over 35 years of experience, John received the International Data Group ASEAN Chief Security Officer Award and was recognised as one of the most outstanding Chief Security Officers in 2013.

He is currently a Fellow to the Singapore Computer Society and serves on the Advisory Board to the IT faculty at the Singapore University of Technology and Design.

John holds a Master's degree in Computer Science from the University of Salford in the United Kingdom.


Wally Lee
Wally Lee

Principal Cyber Architect

As the Principal Cyber Architect at Quann, Wally Lee is responsible for developing Quann's key solutions and services. These include Quann Consult's assessment, testing and consultancy services, Quann Empower's cyber drills and awareness training, and Quann Rescue's incident response offerings.

He has more than 20 years of technical pre-sales and hands-on experience in security audit, incident response management, compliance check, risk assessment, penetration testing, and security development lifecycle.

Prior to joining Quann, Wally was the Regional Cyber Security Specialist covering East Asia for BT.

Before BT, Wally was the Cyber Security Architect at Microsoft covering Asia Pacific. He was leading the cyber security services portfolio, covering from business development to leading the technical delivery. He was also a subject matter expert in the Microsoft Security Development Lifecycle where he led initiatives to promote and assist programmers to code their applications more securely.

Before joining Microsoft, Wally was the Regional Enterprise Solutions Architect for McAfee. He was responsible for developing strategic relationships and provided technical and industry expertise in technologies and solutions for major financial institutions, telecommunication companies, government and defence agencies and multinational corporations in the region.

Wally has also served as executive committee and committee members in several cyber security industry boards and associations. He is the immediate past President of the Association of Information Security Professionals. He holds a Bachelor of Applied Science (Computer Engineering) from Nanyang Technological University, Singapore, and is a Certified Information Systems Security Professional (CISSP) and BS7799 Lead Auditor.