Security

Security Approach for Each Layer

1. Presentation Layer (Mobile Application Frontend)

   • Authentication & Authorization: We will use Keycloak for secure user authentication, providing Single Sign-On (SSO) capabilities, and token-based authentication.
   • Input Validation: All inputs are validated on the client side to reduce the risk of malicious data entering the system.
   • Data Encryption: Sensitive data transmitted from the frontend to backend services (in transit) will be encrypted using HTTPS/TLS.

2. Service Layer

   • API Security: APIs are secured using JWT tokens from Keycloak, validating each request to ensure it is authorized.
   • Rate Limiting: To mitigate potential denial-of-service (DoS) attacks, rate limiting will be implemented on API endpoints.
   • Audit Logging: Logs will be used to track access to critical resources for monitoring and potential incident investigation.

3. Logic Layer

   • Data Validation & Sanitization: This layer will perform server-side validation and sanitization of all data received, ensuring no malicious inputs progress through the system.

4. Caching Layer

   • Secure Cache Management: Cached data will be encrypted, and access control mechanisms will be applied to sensitive cache entries to prevent unauthorized access.
   • Cache Expiration: Sensitive data can have limited cache lifetimes to reduce potential risk if accessed maliciously.

5. Persistence Layer

   • Database Connection Security: Connections between the logic and database layers will require strong authentication to prevent unauthorized database access.
   • Data Integrity: Transactions will be atomic, ensuring data consistency and reducing risks associated with race conditions.

6. Database Layer

   • Encryption at Rest: All data is encrypted at rest to protect against unauthorized access.

Additional Security Practices

• Regularly Update Dependencies and Libraries to patch known vulnerabilities.
• Implement Logging and Monitoring