@SuperSl1nk has tweeted 20 minutes ago that he has found DOM XSS vulnerabilities in one of the largest banks in America. You can view the tweet below:
https://twitter.com/SuperSl1nk/status/283313286701801472
Sl1nk released proof of the exploits via screenshots uploaded to imgur.
This is not the only thing Sl1nk is natrious for, he as hacked many sites in the past including many telecommunication companies, several SCADA systems hacked and various other XSS vulnerabilities in major government sites.