Israel is one of the major intelligence hub in the world. So how did the October 7 attack happen if that was true?
Netanyahu allowed it. Look at the Wikipedia page. He knew. He sacrificed his own people and allowed it to happen.
Egypt said it warned Israel days before the attack that "an explosion of the situation [was] coming, and very soon, and it would be big."[81] Israel denied receiving such a warning,[82] although Michael McCaul, Chairman of the US House Foreign Relations Committee, said that warnings were given three days before the attack.[83]
That's two countries saying Israel knew days before the attack.
According to The New York Times, Israeli officials had obtained detailed attack plans more than a year before the attack.
The New York Times, who spread propaganda for Israel, said Israel knew.
The Times reported, "Hamas followed the blueprint with shocking precision." According to The Times, the document was widely circulated among Israeli military and intelligence leadership, who largely dismissed the plan as beyond Hamas's capabilities, though it was unclear whether the political leadership was informed.
The Times is a British newspaper. They said the IDF knew and information stopped somewhere in the chain of command. That's two newspapers outside their country that knew the attack was going to happen.
According to a BBC investigation, surveillance reports suggested that Hamas was planning a significant operation against Israel, but senior IDF officers repeatedly ignored the warnings.[99]
BBC is one of biggest news sources in the world. That's three news sources outside Israel that knew more than one of top intelligence sources in the world. Mossad had spies in Hamas and some how thousands of fighters crossed the border.