A weekend cyberattack campaign targeting Israeli govt websites failed to cause serious disruption, officials said Sunday. The attacks followed warnings in the name of the hacking group Anonymous that it was launching a massive attack. Yitzhak Ben YIsrael, of the government's National Cyber Bureau, said hackers had mostly failed to shut down key sites. Haaretz newspaper said almost 19,000 Israeli Facebook accounts had been attacked by hackers affiliated with Anonymous.