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Why did we drop the legacy auth flow?
The legacy flow was retired in March after the session-security audit 1. The decision was made in the #eng-core thread 2 and documented in ADR-018 3; the migration steps live in the runbook 4.
Sources (4)
PR #412 · auth: remove legacy flow1Removes the session-token flow deprecated after the audit; new tenants start on OAuth2…
#eng-core2…agreed: we sunset the legacy flow by end of March. @piotr owns the tenant migration…
ADR-018 · Auth v23Context: session-fixation risk identified during the security audit. Decision: retire…
AUTH-2034Acceptance: all tenants on the OAuth2 flow, legacy endpoint disabled and monitored.
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