Large denial of service attacks have rocked Palestinian, severing internet service to the West Bank and Gaza late last week.
The Palestinian Communications Minister Mashur Abu Daqqa told reporters the attacks originated from locations "all over the world ... using mirror servers."
Up to a million packets a second had hit Palestine's incumbent telephone company PalTel, local media said.
Palestine air-gapped its banking systems to protect them from attack.
Abu Daqqua said from "the manner of the attack" that it appeared to be state-sponsored.
The intent of the attacks remained unknown but it came soon after the Palestinians won UNESCO membership amid objections from the US and Israel.
Daqqa suggested its neighbour could be responsible for the attacks.
"Israel could be involved as it announced yesterday that it was considering the kind of sanctions it would impose on us."
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