What kind of a special business software can you suggest?

I would suggest looking into lockscreen software for business computers. It protects your monitors when unattended and prevents unauthorized access.

A few years ago, my company had an issue with information leaking and installed lockscreen software on all workstations. The software automatically locks the screen after a period of inactivity or when the user walks away. Once locked, the computer can only be unlocked with an employee's unique PIN or password.

Since deploying the software, we haven't had a single information leak. I recommend a product like this lockscreen to secure your business workstations and sensitive company data.