Can a trusted application be trusted?

Hello again. One more question from a newbie: If I have made a program on my PC “a trusted application” and Comodo does allow all incoming and outgoing actions, would Comodo recognize the attempt of some malware “sailing under the wrong name”?
For example, if Opera is one of my trusted applications and some malware would use the same name and try accessing the Internet, would that be detected?

If some malware tries to modify that trusted application, you will be alerted.
And the malware with same name would need to be in the same directory as the trusted one.


If you want to be on the safe side, don’t trust any application fully (except Comodo (:LOV) ).