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#10
It would be hard to believe if they didn't digitally sign the exe file, but check the Properties page of the exe file again to see if has a Digital Signatures tab with one in it something like the one for CCleaner below. If not, then there's not much you can do to prevent getting this warning each time you run it without disabling it for everything. You wouldn't want to do that though since it lowers security on your system.