Singapore Telecommunications Limited — Ethics Grade D

Singapore Telecommunications Limited receives an overall ethics grade of D (32/100) on CancelCo's corporate accountability database. Sector: Telecommunications. Market cap: Large Cap.

Category scores

• labor: 60
• privacy: 15
• consumer: 20
• environment: 55
• humanRights: 45

Documented incidents (3)

• Massive Optus Data Breach (high, 2022) — A major cyberattack on subsidiary Optus exposed the private details, including passport and license numbers, of nearly 10 million Australians. This led to a class-action lawsuit and intense scrutiny of the company's security protocols.
• National Network Outage (high, 2023) — A massive network failure at Optus halted internet and phone services across Australia, impacting hospitals, emergency services, and millions of businesses for over 12 hours. The incident was attributed to a technical routine gone wrong.
• Accellion FTA Breach (medium, 2021) — Singtel reported that a third-party file transfer appliance was compromised, leaking personal data of 129,000 customers and staff, including NRIC numbers and bank account details of former employees.

Documented good deeds

• Renewable Energy PPA — Singtel signed a major power purchase agreement to power their 5G network entirely with renewable energy sources.

Ethical alternatives

• StarHub Ltd — Better historical performance on cybersecurity management and data privacy audits.