I think it reflects worse on the companies getting hacked than the need to fight hackers. Of course there will be hackers, but how many people now don't trust Sony or Citi?
Here is the whatweb output: ./whatweb https://online.citibank.com https://online.citibank.com [200] X-UA-Compatible[IE=EmulateIE7, IE=EmulateIE7], UncommonHeaders[jid], Cookies[JFPWebAppInfo,JSESSIONID], Title[Citibank Online], Country[UNITED STATES][US]
Looks like something Java-based. It's fun that sometimes software gets so large that they miss a gaping security hole like this.