Sigma Computing outage, 5 December 2025
Sigma Service Disruption Due to Cloudflare Incident
- Started
- Resolved
- 5 Dec 2025, 09:00 UTC - reported afterwards
- Impact
- Not stated
Last update from Sigma Computing
At 08:56 UTC Cloudflare's scheduled maintenance to their Web Application Firewalls failed and an incident was declared. At 09:12 UTC a fix was deployed and traffic was restored. Sigma's service was impacted by this incident, as this did not allow traffic to reach our servers. Our internal monitoring matches the incident timeline and indicated that customers may have experienced failures when using our services during this brief incident.
Read the full incident on the official Sigma Computing status page
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This page is the record of one past incident. For the live status, see Is Sigma Computing down right now? - it reads the official status page every 2 minutes.
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