> I agree that it is vastly expensive to have a security level high enough that the KGB realistically can not take over your network, but it's far cheaper and m

> I agree that it is vastly expensive to have a security level high enough that the KGB realistically can not take over your network, but it's far cheaper and more realistic to have a security level where it's not worth the expense. Yep. The former is possible in theory but not likely to happen. The latter is somewhat difficult, but ought to be table stakes for any company dealing with security-sensitive anything.