Where can I read more about this Eastern European hacking scene? A few months ago I listened to a talk by the CEO of Palantir who mentioned that in the Paypal d

Where can I read more about this Eastern European hacking scene? A few months ago I listened to a talk by the CEO of Palantir who mentioned that in the Paypal days they unsuccessfully hired PhDs in a battle against the scammers, saying "it turns out you can't outsmart the Russan mob, they're very technical." (the solution was to hire lots of lower skill people and give them some tools to fight the battle)