You should not connect to a web wallet nor run a full node via tor. It is generally safe to look at a block explorer via tor as well to push a TX to the network via tor (you can use a number of block explorers doing this). You can use a number of services to sign a TX that you can push to the network that is created offline
Someone sent me this as a recomendation
Check the SSL certificate fingerprint
Does anyone know how to do this?
in the address bar click on the icon that is behind the address, a lock shape in google chrome and firefox.
you can see the corporate's information this way