Cloud
[SC] Supply Chain
Fastly Third-Party Breach (September 2025)
Primary Source ↗Incident Details
In 2025, Fastly experienced a data security incident via a third-party vendor relationship. The compromised
third-party vendor was Drift (Salesloft). Source reporting: https://www.fastlystatus.com/incident/377884
Technical Details
- Initial Attack Vector
- Compromise of third-party service provider / vendor relationship
- Vendor / Product
- Drift (Salesloft)
- Supply Chain Attack
- ✅ Confirmed third-party / vendor compromise
Timeline
- 2025-09-01 Breach occurred
- 2025-09-01 Publicly disclosed