Just returned from DEFCON 27!
What an amazing space full of 30000 plus hackers,crackers,spooks,legislators,LE,etc.
Went to the Monero Village,AI Village,Car Hacking,Crypto and Privacy,Mobile app malware,Voting Machine Hacking,etc. etc.
It was worth the cost of admission and then some. One of the many cool things I came across was the following blockhain based game,have my 12 year old beta testing it out right this moment.