The Bank of Israel's website had been defaced by hacktivists. According to a spokesman for the Bank of Israel the site was hosted by a third party and is not actually connected to internal systems. Interesting that traceroutes indicate that the site is hosted by Bezeq, the Israeli telephone company, and that the IP address is in the Israeli governement's netblock. So, while it may be true that the website is not directly connected to the internal systems at the Bank of Israel it appears that an Israeli government sustained website has been taken down for almost two days.
Keep in mind that the Bank of Israel is equivalent to the US Federal Reserve. Not a place where consumers keep there money but the central bank that controls money supply. Imagine if the Fed's website where hacked by terrorist organizations. That would be chilling.