Securely integrate external programs with networked application

[romillyrom]

Hii community ,
I’m looking to integrate several external programs with my networked application and need guidance on how to do this securely. The programs will interact over the network, but I’m concerned about potential security vulnerabilities and data integrity issues. Specifically, I’m interested in best practices for securely handling data exchanges, managing authentication, and ensuring that the integration does not expose my application to risks.Currently this is is the problem iam facing. guide me to solve my issue