Adobe runs tests on Adobe apps to check for any tampering or invalid licenses. When such issues are discovered, notifications are sent along with options to resolve the issue. If you or someone in your organization gets a notification, it means that the app on that machine isn't a genuine Adobe app.
Studies show that over 60% of non-genuine software includes embedded malware. Plus, non-genuine Adobe software isn't covered by warranty or support programs. Only genuine Adobe apps and services give you the latest features and functionality, plus added protection from malware and viruses.
When you attempt to install or reinstall an app with a serial number blocked by Adobe because of known illegal activity, you will see a warning. Examples of error messages that you may see are shown below.