Segment change history: Intermittent Segment application login errors

Segment reported a major incident causing intermittent login errors for a subset of customers, affecting Web Interface (EU) and Web Interface (US). It started at 2026-08-18 17:49 UTC and was resolved at 2026-08-18 22:02 UTC, lasting 4 h 13 min; login was reported operating normally at 18:38 UTC.