I remember when I discovered the SSID Billboard / SSID Advertising hack:

It joins a more generic trend I love: the equivalent of side-channel attacks or just, hacking default usages for alternative purposes.

github.com/moul.keys

PS: Just to be clear, no, I don’t have the private key that goes with the ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL++++++++++++++++++++++++++++++++++++++++++ public key :)

PS 2:: Yes, I do have the private keys for public keys ending with 42, and yes, I generated a lot of keys before having them (approx 2 millions) :p