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05 April 2025
Singapore Ransomware Wake-Up Call: DBS & Bank of China Affected in TNT Breach
April 2025 delivered a stark reminder: even our most established banks aren’t safe from cyber threats.
On the evening of 6 April 2025, a ransomware attack was reported by Toppan Next Tech (TNT) to the Personal Data Protection Commission (PDPC). The breach, which involved DBS Bank and the Bank of China (Singapore branch), resulted in customer information being exfiltrated by threat actors.
Though customer login credentials were reportedly not compromised, the breach raises serious concerns about third-party risk, data supply chain vulnerabilities, and the evolving playbook of ransomware groups.
Who Got Hit — and How?
TNT, a tech service provider, became the entry point for this attack — a classic example of a “weakest link” vulnerability. Once inside, the attackers managed to extract sensitive customer data from banking systems connected to TNT’s ecosystem.
The Monetary Authority of Singapore (MAS) and the Cyber Security Agency (CSA) are now working closely with all affected parties. Banks have activated enhanced monitoring, customer notification protocols, and containment strategies.
But let’s be real — the damage control phase is already in motion. The focus now shifts to how others can prevent being next.
3 Key Takeaways for Your Business
1. Your Vendors Are Your Attack Surface
If your third-party vendors aren’t secure, you’re not secure. Many companies focus on securing internal systems but neglect to audit their vendors’ cyber hygiene. That’s like building a vault with a glass backdoor.
👉 Action: Conduct annual vendor security audits. Ask: Are they ransomware-ready?
2. Ransomware Is No Longer Just About Encryption — It’s Exfiltration
Modern ransomware doesn’t just lock data; it steals it first. This puts companies in a double bind: operational shutdown and data leaks.
👉 Action: Implement robust data loss prevention (DLP) and endpoint detection & response (EDR) systems. Train staff on phishing and social engineering.
3. Incident Response Must Include Customer Comms
How fast you notify and support customers matters. MAS has shown that customer-first transparency is now expected — not optional.
👉 Action: Rehearse your breach playbook. Have a Digital Fire Drill (Raven offers this). Know who speaks to whom, and when.
🛡️ How Raven Can Help
At Raven, we help companies stay resilient with:
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Third-Party Risk Assessments
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DPO-as-a-Service (for PDPA compliance)
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Breach Simulation & Response Drills
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Ransomware Prevention Frameworks
We don’t just patch the holes — we fortify the foundation.
Final Word: Don’t Wait for the Headlines
If it can happen to DBS and Bank of China, it can happen to you.
Don’t let a third party become your weakest link.
Let Raven help you become breach-ready — before the breach happens.
🔐 Schedule a ransomware risk consultation with us today.
