M1 security incident history
Hacking, data breaches and other security incidents involving M1, with related coverage.
Incidents: 1 · Most recent
Singapore telecoms operator M1 suffers leak of customer identification numbers and contact details
Singapore telecoms operator M1 detected and contained a customer data breach on 30 October 2026. Customer names, national and foreigner identification numbers, dates of birth, telephone numbers, email addresses and postal addresses were exposed, but the number of affected customers was not disclosed. Payment card details, financial information and account access credentials were not compromised, and services continued to operate normally. The Personal Data Protection Commission launched an investigation.
Related reports: 11 · last report →