A cyberattack campaign has targeted Israeli government websites.
The cyber attacks followed a warning from the hacker group Anonymous, which said it would launch a massive attack on Israeli sites in an "operation" called #OpIsrael.
"You have shown that you do not respect international law," said the group in a video released online addressing the Israeli government.
"This is why that on April 7, elite cyber-squadrons from around the world have decided to unite in solidarity with the Palestinian people against Israel as one entity to disrupt and erase Israel from cyberspace," it added.
Israel's Bureau of Statistics was down early on Sunday but it was unclear if it had been hacked.
Media reports also said the sites of the War and Education Ministries as well as banks had come under attack the night before but were mostly repelled.
Haaretz newspaper said almost 19,000 Israeli Facebook accounts had been attacked by hackers affiliated with Anonymous.
Last November, hackers broke into Israeli websites during fighting in Gaza but failed to cause serious disruption, according to AP news agency.
