Use more safe & optimise pattern

[mmaous]

Issue Description

Problem

The current implementation of the file transfer service could potentially be improved to enhance security and optimize performance.

Proposed Solution

• Enhanced Security: Review the current codebase to identify any potential security vulnerabilities or areas where security can be strengthened. This may include implementing best practices for handling sensitive information, such as credentials, and ensuring secure communication protocols are used.
• Optimized Performance: Evaluate the existing code for any performance bottlenecks or areas where optimization can be achieved. This may involve refactoring code to improve efficiency, reducing unnecessary operations, or utilizing more efficient algorithms and data structures.

Goal

The goal of this issue is to implement safer and more optimized patterns in the file transfer service to enhance security and improve performance.