Symptoms

1. Machine is running Dentrix software,
2. You receive false-positive alerts from Acronis Active Protection:

   Suspicious activity is detected
   On machine 'machine name', injection process within program '...\DENTRIX\...' modified file. The process has been stopped, and the file changes have been reverted.

Cause

The behavior is by design. 

Dentrix software is being monitored by Active Protection because it does not have a valid signature.

Solution

There are two possible solutions:

1. Contact the vendor to obtain a valid signature.
2. Add Dentrix installation folder (e.g. C:\Dentrix) to the list of Trusted folders, where file changes will not be monitored: Antivirus & Antimalware protection module -> Exclusions -> Trusted tab -> add the folder in Folders section and save changes.