Israeli security agencies are on alert over the potential for cyber-attacks by Anonymous on Thursday, after the hacker group previously targeted the Jewish state each April 7.
The attacks in solidarity with the Palestinians have in the past succeeded in blocking government sites, including for the Ministries of Defense and Foreign Affairs.
"We are prepared for all forms of aggression," a Shin Bet official told AFP. "Israel is well-protected."
The April 7 cyber-attacks were first launched in 2013 and that year timed to coincide with the eve of Holocaust Remembrance Day in the Jewish calendar.