Assume a trojan acquired admin privilege on a Windows 7 machine. How easy is it for the trojan to replace/hijack/modify a browser extension without user knowing it? Is it possible?
I am thinking of implementing a chrome extension to provide additional security layer. So I would like to know whether the trojan can modify the behaviour of my "security extension" that easily. I can understand that the trojan might be able to easily uninstall the chrome extension without user knowing it (uninstalling is not a problem, but hijacking/modifying is).
Also, are there any special security mechanism to prevent the tampering of a chrome extension?