Journalist and researcher Laura Shin reported on February 22 that she had successfully used a forensics tool from Chainalysis to discover the identity of the hacker: Toby Hoenisch, a co-founder of the TenX "crypto debit card" project. Hoenisch refused to speak with Shin, and has denied the allegation.
For a technology that makes lofty promises of anonymity and privacy, increasingly-powerful technology is being released that at least claims to be able to unwind crypto mixing and make other connections between wallets and transactions that were previously extremely difficult, if not next to impossible. I imagine there may be a few people behind various crypto crimes sweating a bit as these technologies progress and threaten to unmask those behind other hacks and scams.