JERUSALEM, Israel -- Israeli hackers responded to last weekend's cyber-attacks on the Tel Aviv Stock Exchange and El Al Airlines websites by bringing down the Saudi Stock Exchange (Tadawul) and the UAE's Abu Dhabi Securities Exchange (ADX) websites.
Calling themselves the IDF-Team, the Israeli hackers froze the Tadawul website and caused delayed responses on the ADX website.
The group warned that next time, they will close down the websites for up to a month.
Israeli Minister of Intelligence Services Dan Meridor told Israel Radio Wednesday morning that individual initiatives in Israel's name are "ineffective."
"Individual initiatives by Israeli hackers to attack Saudi hackers -- or hackers from anywhere else for that matter -- are ineffective and shouldn't be done in Israel's name," Meridor said.
Earlier this week, an Israeli hacker calling himself Hannibal published the email addresses and Facebook passwords of 30,000 Arabs on a hacking site in response to a Saudi hacker publishing Israeli credit card information.
Ha'aretz and YNet contributed to this report.