Accessing REST Integration without username/password

Summary

How to get around setting username/password in VBCS to access ICS Integration

Content

We have built a VBCS application that calls a Rest Service created in ICS.

The only way to access the Rest service is to provide a UserName and Password for a user in the cloud service.  This username/password is embedded in the VBCS to pass the data.

The cloud service requires that passwords are reset every three months which means we also then need to update the details in the VBCS application and deploy that to production.

Is there a way to bypass this or to even use the username/password that were created in the connection?