01/16/2012 07:06 EST | Updated 03/17/2012 05:12 EDT

Hackers disrupt websites of Israel's stock exchange, national air carrier

JERUSALEM - Hackers have disrupted the websites of Israel's stock exchange and national air carrier in a deepening cyber war allegedly launched this month by Saudi cyber attackers.

A person familiar with the situation at El Al Israel Airlines says the carrier took down its website Monday after the alleged Saudi hacker network behind previous attacks warned that both sites would be targeted.The person spoke on condition of anonymity to reveal confidential information.

The company said it was taking security measures to protect the website and that disruptions were to be expected. Flights were not affected.

A spokeswoman for the Tel Aviv Stock Exchange says its site has been overloaded in what is known as a denial of service attack but is still operating. Orna Goren says trading was not affected.