[Backend] Conduct security audit on SEP-10 Authentication

[emdevelopa]

Description
This task involves system optimization for the SEP-10 Authentication module.
The goal is to conduct security audit on SEP-10 Authentication to enhance the platform's robustness, security, and developer experience.

Requirements and context

• Must be secure, tested, and documented
• Adhere to the Drips Wave design and engineering standards
• Ensure full test coverage for new logic
• Specifically focused on backend system optimization and security integrity

Suggested execution

Fork the repo and create a branch
git checkout -b feature/be-conduct-security-audit-on-sep-10-authentication
Implement changes

Review existing implementation in SEP-10 Authentication
Apply changes: Conduct security audit on SEP-10 Authentication
Ensure robust error handling and logging
Test and commit

Run unit and integration tests for SEP-10 Authentication
Cover edge cases and validate security assumptions
Include test output and security notes in the PR
Example commit message
feat(backend): conduct security audit on SEP-10 Authentication

Guidelines

Complexity: High (200 points)
Assignment required before starting
PR description must include: Closes #[issue_id]