I think it's a pretty obvious ipso facto that the more, and more advanced weapons, that are placed into the global battlefield, the less actual security (in life and liberty) we can expect.
The problem isn't that there are adversaries that are willing to sacrifice their people, almost every war is one of attrition after all, it's that leaders that would be adversaries like this are inevitable in a governmental structure that is delegated a monopoly on violence.
As we saw with 702, we really have very little leverage left in what our gov does anymore, the threat of being voted out even carries little power, exactly because they're systematically removing humans from every loop they can for the purpose of working unilaterally even when--perhaps especially when--it's against the will of the people. The spooks themselves have literally said exactly as much in their fight against privacy.
To me, the latest 702 is more terrifying than any adversary. When we, who the government should be beholden to, cannot even know the text of the laws which apply to us, it really puts a fine point on how the those who run our government view themselves in relation to its citizenry.
"The liberties of people never were, nor ever will be, secure, when the transactions of their rulers may be concealed from them." -Patrick Henry
Not that it matters, the state still doesn't care. It can't, it's not that kind of being.