M1 security incident history
Hacking, data breaches and other security incidents involving M1, with related coverage.
Incidents: 1 · Most recent
Singapore telecom M1 hit by leak of customer identification numbers and contact details
Singapore telecom operator M1 detected and contained a customer data breach on October 30, 2026. Customer names, national and foreigner identification numbers, dates of birth, phone 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 →