Security architecture: defence in depth for a multi-tenant system
From a database password committed to main: defence in depth, zero trust and least privilege, trust boundaries and STRIDE, encryption in transit, at rest and per field with a key hierarchy, secrets in a vault with rotation, login, tokens and revocable sessions, tenant-first authorisation, Stripe and BeyondCorp, and incident response.
01 · Previously
W09 · DAY 05 · Security Architecture
Every control needs a fortress.
Previously: right to deletion
Previously, on Day 4, you erased a user from every system: an inventory, an ordered deletion orchestrator, verification, and an audit trail that proves it happened.
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