Over 2,500 cyber experts tackle simulated advanced digital threats
Singapore has become the epicenter of a major international cyber defense drill, reflecting rising global urgency to secure critical infrastructure against increasingly sophisticated digital threats.
A Landmark Exercise in Singapore
More than 2,500 cyberdefenders from armed forces, government agencies, and industry partners across 29 countries are taking part in Defence Cyber Marvel from Feb 9 to 13. Conducted by the British Army Cyber Association, the exercise is in its fifth edition in 2026 and is being hosted in Singapore for the first time.
Participants are joining both in person and remotely, reflecting the truly global nature of modern cyber defence collaboration.
Responding to Realistic Threat Scenarios
The exercise places teams in a simulated operational environment where they must defend against complex, real-world cyber threats. According to Singapore’s Ministry of Defence, Singapore’s Digital and Intelligence Service Defence Cyber Command is working alongside British Armed Forces counterparts to counter coordinated attacks.
These simulations target critical infrastructure, government networks, and private sector systems. The goal is to sharpen operational readiness in a rapidly evolving digital landscape.
Understanding Advanced Persistent Threat Actors
A major focus of the drill is countering advanced persistent threat actors. These attackers are well-resourced and highly sophisticated, often infiltrating networks undetected for extended periods.
Their objectives range from long-term espionage and data theft to disruption of essential services. Because they operate quietly and strategically, defending against them requires constant adaptation and cross-border cooperation.
Real-World Context: The UNC3886 Incident
The relevance of the exercise became clear on Feb 9, when Singapore authorities disclosed that threat group UNC3886 had targeted all four of the country’s major telecommunications companies.
Officials confirmed that no sensitive data was accessed or exfiltrated, and critical systems such as the 5G core were not compromised. Still, the incident highlighted the scale and persistence of global cyber risks, reinforcing the need for joint defence efforts like Defence Cyber Marvel.
Strengthening Indo-Pacific Cyber Alliances
Air Marshal Suraya Marshall, deputy commander of the UK’s Cyber and Specialist Operations Command, described Singapore as an ideal host due to its standing as a leading technology and security hub.
She emphasized that holding the exercise in Singapore underscores the strategic importance of the Indo-Pacific region. It also strengthens cyber defence partnerships beyond Europe and complements the United Kingdom’s NATO commitments by building a broader global network of capable allies.
Building on Previous Editions
In the 2025 edition hosted in Seoul, South Korea, teams engaged in live attack-and-defence scenarios that demanded rapid innovation and creative strategy. Those competitive environments helped refine emerging cyber defence techniques.
Singapore’s Digital and Intelligence Service, established in October 2022, has participated in the annual exercise since 2024, when it was held in Estonia. MINDEF noted that continued participation reflects the growing importance of cybersecurity in modern military operations and underscores the longstanding bilateral defence relationship between Singapore and Britain.
Cybersecurity as a Strategic Imperative
Cyber operations are now central to national defence strategies worldwide. As digital systems underpin telecommunications, finance, transportation, and military infrastructure, vulnerabilities can have far-reaching consequences.
Exercises like Defence Cyber Marvel allow countries to test capabilities, share expertise, and strengthen collective resilience before real crises unfold.
Cybersecurity has evolved into a frontline defense priority as digital infrastructure becomes increasingly central to national security and economic stability. Hosting Defence Cyber Marvel signals Singapore’s rising influence in global cyber strategy while deepening its defence partnership with the United Kingdom. For Indonesia and the wider Southeast Asian region, the exercise reinforces the importance of regional cyber resilience amid escalating global digital threats.
Sources: Straits Times (2026) , Yahoo! News Singapore (2026)
Keywords: Cyber Defence Exercise, Advanced Persistent Threats, Singapore MINDEF, Digital Intelligence Service, British Army Cyber Association, UNC3886
