He did , he was using Tor browser also but seems like he didn't configure it as should be . A hacker managed to hack his P2P Foundation account (website where he launched Bitcoin project for the first time )
You can see here that he used his account and said that he will sell his IP in the Darknet => http://p2pfoundation.ning.com/forum/topics/bitcoin-open-source?commentId=2003008%3AComment%3A55276