The army assumed that Israel’s high-tech border fence would have thwarted any threat.
Originally Posted by Kangaroo Don
fatal complacency Israel was asleep at the wheel and the Technology can only do so much eg: Iron Dome

Mossad, Shin Bet, IDF misread Hamas for years, left southern Israel utterly vulnerable

Israel missed obvious signs Hamas was about to attack: official probe
1. The first Israeli military commission into the October 7 attacks found military officials were blindsided by the Hamas-led assault
2. after badly misinterpreting the militant group’s intentions
3. and vastly underestimating its capabilities – even hours before the attack.

Israeli Army Misunderstood Warning Signs on Night Before October 7 Attack, Probe Finds:
While concerning signs emerged the night before Hamas launched its assault, the military assumed it was a drill and failed to grasp the urgency