This is not a DDOS, Tell the truth SE.

[Darkshade]

Every DDoS is a spy vs spy game with the bad guys.

They attack, you put in a countermeasure, they circumvent that and continue the attack, you circumvent that, and the cycle continues.

Unless you want to implement some rather draconian privacy violations to make sure that attacks such as this are traced back to everybody involved and punished, we have to accept that there will be disruptions.

SE doesn't need you to defend them, they can do it that themselves