Multi-Tenancy on BlueSquadron — Security engineering for AI systemshttps://bluesquadron.dev/tags/multi-tenancy/Recent content in Multi-Tenancy on BlueSquadron — Security engineering for AI systemsHugo -- gohugo.ioen-usflorent.batard@gmail.com (Florent Batard)florent.batard@gmail.com (Florent Batard)Tue, 11 Aug 2026 00:00:00 +0000Watari: A Security Control That Was Never Onhttps://bluesquadron.dev/posts/watari-a-control-that-was-never-on/Tue, 11 Aug 2026 00:00:00 +0000florent.batard@gmail.com (Florent Batard)https://bluesquadron.dev/posts/watari-a-control-that-was-never-on/Watari’s headline claim is tenant isolation enforced by PostgreSQL Row-Level Security. The policies had been in the schema for months and had never once taken effect. Turning them on took four changes that had to land together — and none of them was writing a policy.