Published on Monday, 27 January 2014 09:29 by Reuters Hackers broke into an Israeli army ministry computer via an email attachment tainted with malicious software that looked like it had been sent by the country's Shin Bet secret security service, an Israeli cyber security firm said on Sunday. Seculert Aviv Raff, chief technology officer at , said the hackers earlier this month temporarily took over 15 computers, one of them belonging to Israel'sCivil Administration that monitors Palestinians in Israeli-occupied territory. Raff told Reuters that Palestinians were suspected to be behind the cyber attack, citing similarities to a cyber assault on Israeli computers waged more than a year ago from a server in the Hamas-ruled Gaza Strip. While the latest attack was conducted from a server in the United States, experts noticed writing and composition similarities with the earlier attack, he said. Israeli officials declined to comment on Raff's findings. "We are not commenting on it, we don't respond to such reports," said one of the officials, Guy Inbar, a spokesman for the Israeli Civil Administration. There was no immediate Palestinian comment on the report. Securlet had not determined what the hackers did after the initial infection with "Xtreme RAT" software, Raff said. "All we know is at least one computer at the Israeli Civil Administration was in control of the attackers; what they did we don't know." The Israeli Civil Administration is a unit of Israel's army ministry that oversees the passage of goods between Israel and the West Bank and Gaza Strip, territories Israel captured in a 1967 war and which Palestinians want for a state. The administration also issues entry permits to Palestinians who work in Israel.