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A group of computer hackers, thought to be from Saudi Arabia, claim to have stolen and published the details of up to 400,000 active Israeli credit cards.

Details of the hack were exposed late Monday, reports AFP, in a statement posted on an Israeli sports website.

"Hi, It's 0xOmar from group-xp, largest Wahhabi hacker group of Saudi Arabia," the statement read. "We are anonymous Saudi Arabian hackers. We decided to release first part of our data about Israel."

Links in the statement led to websites containing details of Israeli credit cards, as well as cards used to purchase merchandise from "Judaism" websites and those used to donate to "Israeli Zionist Rabbis."

Israel David, CEO of Israel Credit Cards-Cal Ltd, confirmed the security breach but said that after combing through details posted online, they had identified only 14,000 valid credit cards.

"These cards are being removed from the system," he said Tuesday morning.

According to Isracard CEO Dov Kotler, there was no breach of security at the credit card firms or at any banks.

"We are fully in control of the situation," he added.

He said there were some seven million active cards in the Israel.