[frcc]

Yes, some facts are known .and, Yes, obviously some code / technique obsolete.
(depending on use and target)

My opinion - this is a cycle in which we find out something at sometime..
Many exploits are unknown "now" because nation states and / or criminal groups have use / need
for them, thus, the cycle resembles the old "spy vrs spy" or if you will "roadrunner vrs Wiley Coyote" cartoons