NSA's job is SIGINT, so it's at least partly their responsibility when the threat is foreign.
replyFor example, the NSA should be successfully infiltrating every major foreign hacking team in the world and monitoring and/or disrupting their activities.
> the NSA should be successfully infiltrating every major foreign hacking team in the world and monitoring and/or disrupting their activities.
replyI'm sure this exists, but I'd expect CIA to be more involved in any sort of covert operations across nation state lines, especially if undercover humans are involved.