Browser boundary
Public and authenticated client roles are kept away from privileged database execution. The browser receives only the data and actions required for its current workflow.
Least-privilege architecture
Public clients get only what they need. Nothing more.
Vaultify uses a deny-by-default posture for sensitive business tables and privileged functions. Browser sessions do not receive administrative capabilities; protected operations are executed through narrow authenticated server endpoints.
Server boundary
Edge/server handlers verify the authenticated user, confirm tenant membership and call narrowly scoped database operations. Administrative credentials never become user inputs.
Database boundary
RLS, explicit grants, constrained RPCs and transactional guards protect the database even if a UI path is bypassed or called out of sequence.
Release boundary
Permission regressions are tested in CI. Security checks target both successful flows and denied access, including cross-tenant and anonymous attempts.
Practical outcome
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Reduced blast radiusA compromised browser session does not inherit service-level database privileges.
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Tenant-safe by designTenant context is derived from verified membership instead of trusting arbitrary client parameters.
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Auditable operationsCritical actions pass through controlled server paths with predictable logging and validation.
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Regression checksAutomated tests guard the security model as the product evolves.
See the full hardening case study
Architecture, verification and production engineering proof.
Public summary intentionally excludes private code, secrets and customer data.