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Payroll Security Boundaries

Summary​

Payroll security depends on gateway-mediated identity, tenant-scoped access, least-privilege service exposure, and strict protection of financial outputs.

Audience​

Backend and frontend developers, QA and DevOps engineers, support and security engineers, and solution architects.

Overview​

Payroll security depends on gateway-mediated identity, tenant-scoped access, least-privilege service exposure, and strict protection of financial outputs.

Technical Detail​

Authentication and authorization​

Requests are expected to arrive through the authenticated gateway with tenant and actor context. Payroll application code consumes that context, but a complete service-local policy model is not confirmed. Direct service exposure must not be assumed safe.

Tenant isolation​

Global EF filters and explicit tenant predicates provide data-scoping mechanisms. Because some queries bypass filters before adding predicates, code review and tests remain required. Universal cross-tenant assurance is not claimed.

Sensitive data​

Payroll outcomes, employee compensation context, payslips, and bank-ready exports are sensitive. Public documentation excludes values and identifiers. Implementations should minimize returned fields, restrict administrative versus employee-self access, encrypt transport/storage, audit access, and apply least privilege.

Trust boundaries​

Gateway, broker producers, Notification consumers, persistence, and generated-document callers are separate trust boundaries. Exact policies, bypass behavior, and internal weaknesses are intentionally excluded.

Source References​

  • microservices/src/payroll-service/Program.cs
  • microservices/src/payroll-service/Infrastructure/Persistence.cs
  • microservices/src/payroll-service/Infrastructure/PayrollDbContext.cs
  • microservices/src/gateway-api/Program.cs
  • microservices/src/payroll-service/Application/PayrollOutputsService.cs

See Also​

Keywords​

  • Payroll Service
  • Payroll Security Boundaries
  • Technical architecture

Revision Information​

  • Status: Draft
  • Last reviewed: 2026-07-15
  • Review cycle: Quarterly