Websites for Israel 's Knesset and intelligence agency appeared to be down Sunday . Hamas ' own website was itself hacked ; it contains Israel 's national anthem . Hackers can do ` ` no real damage , '' Israeli cyberchief ##s . Instead of anti-Israeli messages , it was playing Israel 's national anthem , `` Hatikvah . '' Group called Anonymous Arab announced attack early last night .
Websites for Israel 's Knesset and intelligence agency appeared to be down Sunday . Hamas ' own website was itself hacked ; it contains Israel 's national anthem . Hackers can do ` ` no real damage , '' Israeli cyberchief ##s . Group called Anonymous Arab announced attack early last night .