Make sure your router DNS SERVER has not been refirected. Unless they can spoof the blockchain read (redirect a bogus copy that triggers a program load) into the ARM processor a program payload cannot load. The router is corrupted the same way as 99% are ARM BASED. Dont worry too much common hackers don't have access keys to hardware backdoor. In fact, i use Trezor too and connect through a vpn. NSA CIA JCHQ LARGE CORPS HAVE hardware key exploits. It's unclear whether tools exist to get into Trezor bare metal code. We engineerz have projects planned to assure only authenticated datastreams enter the trezor. Dont worry unless you are a target of alpha agencies.