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.
Key facts
- Affected organisation
- M1
- Incident type
- Data breach
- Occurred / detected
- 2026-10-30
- Scale of damage
- Not confirmed
- Cause / method
- Not confirmed
- Location
- Singapore
If your data was exposed
Exposed dataNameNational ID numberDate of birthPhone numberEmailAddress
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- M1 detected and contained a customer data breach.
- M1 disclosed the customer data breach, and an investigation by the Personal Data Protection Commission became public.
11 related reports
- M1 Discloses Data Breach
- M1 Confirms Data Breach Exposing Customer NRIC and Contact Details
- M1 hit by data breach on Oct 30, customer data exposed
- M1于10月30日遭遇数据泄露，客户数据曝光
- M1 hit by data breach
- M1遭遇数据泄露
- M1 confirms contained Oct. 30 breach exposed customer identifiers
- M1和Doctor Anywhere同日披露客户资料外泄事件
- M1 says data breach identified & contained, but customers’ personal info leaked
- M1 reports data breach exposing customer personal information
- M1 hit with data breach
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.