There is no such thing as a “National Security Threat” because in order for that to exist, the “threat” would have to jeopardize the security of an entire “nation”…and no one individual can actually do that unless they personally are in possession of nuclear or biological weapons. “National Security Threat”‘ is just an unproven accusation that government employed criminals thinks excuses them from the responsibility of proving vague and unspecified accusations. It does not.
By default, all such accusations are false unless they are accompanied by evidence that the accused was engaged in an action that would have eliminated the nation’s security in its entirety.