Basically, the hacker couldn’t stop himself from bragging his successful hack on Finnish dark web, of which is a very small group of the world population (Finland has around 0.07% of the world population). And to make this worse for himself, he uploaded his entire home folder in .tar format, which can be read even when it’s download partially.
Yea, “Tracing Monero” had nothing to do with this idiot getting busted.