The "rumor" was likely a result of this tweet (plenty of tweets with plenty more information since then):

R̶o̶m̶a̶n̶o̶UASFmano @RNR_0  2h

hahaha I don't know how but I generated a Ethereum privkey with NodeJS & I accidentally cracked someone else Privkey.

1.2 $ETH & DAO

(edit) direct link: https://twitter.com/RNR_0/status/869950371141177344