# User Authentication Identity SNA Failure Increase for AT&T in United States

- Provider: [Twilio](https://down.guide/twilio)
- Level: confirmed
- Impact: Degraded
- lasted 3h 40m
- started 2026-08-17 18:54 UTC
- Verify Silent Network Auth
- us
- id: DWN-f63e29fc5f
- Official page: https://stspg.io/mhc4g1141vh7

## Updates from Twilio
### 2026-08-17 18:54 UTC: investigating
Twilio customers may be experiencing User Authentication Identity SNA failure increase for AT&T in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

### 2026-08-17 19:09 UTC: identified
Twilio customers may be experiencing User Authentication Identity SNA failure increase for AT&T in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

### 2026-08-17 20:16 UTC: identified
Twilio customers may be experiencing User Authentication Identity SNA failure increase for AT&T in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

### 2026-08-17 22:04 UTC: monitoring
We have observed a recovery in User Authentication Identity SNA failure increase for AT&T in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

### 2026-08-17 22:34 UTC: resolved
The incident has been resolved and User Authentication Identity SNA failure increase for AT&T in the United States is operating normally.

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