A production-grade banking login interface engineered with application-level defensive logic to neutralize automated reconnaissance and credential stuffing without relying on external infrastructure filters.
Visual documentation of the authentication and defense mechanisms.
High-level system design and security objectives.
- Objective: Implementation of banking-grade authentication protocols designed to mask internal system state and neutralize automated reconnaissance.
- Architecture Pattern: Clean Architecture (Domain-Driven Design) with a decoupled Angular 19 SPA and a .NET 9 Web API backend.
- Data Flow: Requests are processed through a pipeline consisting of FluentValidation Middleware -> Application Service Layer -> Domain Logic -> Infrastructure/Persistence (Entity Framework Core).
Technical justifications for critical security implementations.
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Security vs. Throughput: Latency Normalization
- Context: Prevention of side-channel timing attacks used to distinguish between valid and invalid user records based on execution time.
- Decision: Integration of a
DelayServiceto standardize response intervals across all sensitive authentication endpoints.



