On Monday Hackers shut down both the Tel Aviv Stock Exchange and El Al airlines's respective websites. The hacker network, which goes by the name "nightmare group," was able to cause severe problems for both sites. By 10 A.M., TASE's website was only partially functioning, while El Al's website did not function at all. The hack comes in the wake of a series of cyber attacks over the past two weeks, and only a day after Hamas called for harsher hacking attempts against Israeli websites. Hamas spokesperson Sami Abu Zuhri encouraged the penetration into Israeli websites and said that it opened a new front for resistance and war against the Israeli occupation.