When Solidcore product is deployed and enabled, the password file is protected from tampering by Solidcore product. Only an IT admin who manages the Solidcore product can disable the protection.
For end-points managed by ePO, the password is governed by the policy at ePO.
For standalone deployments, it is recommended to set the password to ensure non IT-admin users are not able to tamper with the system/product.
In your case, since you disabled the protection, we assume that either you installed the product and didnt set the password or knew the password. This is a valid IT-admin use-case to temporarily disable protection for troubleshooting any system/product issue.
Based on above comments, i hope it is clear that the Solidcore protects the password file and end-users cannot manipulate the system.
If you have any further questions, please post here or open a Service Request.