A dangerous virus has reportedly struck nearly hundreds of computers in the Middle East, with the highest number coming in Iran.

Called the “most sophisticated cyber-weapon yet unleashed,” the virus attacked more than 600 computer systems in Iran, Syria, Lebanon, Egypt, Sudan, Saudi Arabia and the Palestinian Authority, Israel National News reported.

“Stuxnet and Duqu belonged to a single chain of attacks, which raised cyberwar-related concerns worldwide…The Flame malware looks to be another phase in this war, and it’s important to understand that such cyber weapons can easily be used against any country,” said Eugene Kaspersky, CEO and co-founder of Kaspersky Lab, a Russian-based multi-national computer security company that discovered the virus, according to Israel Hayom.

Israeli Vice Prime Minister Moshe Ya’alon hinted that Israel might be behind the cyber attack. “Whoever sees the Iranian threat as a meaningful threat—it is reasonable he would take various measures, including this one,” he said.