Overall Risk Level: 
“Warning! Running trial version!” is a popup alert message coming from a rogue program Privacy Center. This is an old rogue that was revived by its author and issuing new waves of alerts such as:
Warning! Running trial version!
The security of your computer has been compromised!
Now running trial version of the software!
Click here to purchase the full version of the software
and get full protection for your PC!
Alias: PrivacyCenter
Damage Level: Low
Systems Affected: Windows
Screenshot

Any Response?