Hoping someone can help me figure out exactly what happened here.

From this post - http://www.reddit.com/r/Bitcoin/comments/1cnroc/my_wallet_just_got_hacked/

"Can someone explain what just happened to me?
I had a very strong password on my Bitcoin wallet - which means for every transaction the password would have to be entered. I clicked a link on 4chan which led me to some some chat site, some javascript was run and it didn't seem to do anything at first - boot up my bitcoin wallet and I see a transaction for 2.07 BTC to an address that I did not know.
Can someone explain what just happened? I thought bitcoin was safe so long as I had a strong password on my wallet. How was this exploit able to bypass the password prompt?
The site was "CoinChat.freetzi.com". FAIR WARNING - THIS SITE FUCKED ME UP AND STOLE MY BTC. DO NOT RUN SCRIPTS ON THIS WEBSITE.

My wallet address is 1Q6euP4nmfn5EpsCovo1xb5PsjDd86CQwX
and the transfer went to this wallet 1Es3QVvKN1qA2p6me7jLCVMZpQXVXWPNTC
AMOUNT: 2.07 BTC
https://blockchain.info/address/1Q6euP4nmfn5EpsCovo1xb5PsjDd86CQwX
Please, anyone got any idea wtf just happened to me?"


Like I said, I did *not* enter my password, the coins were simply gone after I loaded up bitcoin-qt.

This is a huge exploit and a huge turn-off for me - I lost all my money due to an exploit in bitcoin-qt and now I'm out the $500 bucks I paid for those 2.07 BTC.

Can anyone please explain what happened and why? I thought my bitcoins were safe with a strong password...