What Went Wrong? Questions Emerge Over Israel’s Intelligence Prowess After Hamas Attack 

Israel's Iron Dome anti-missile system intercepts rockets launched from the Gaza Strip, as seen from the city of Ashkelon, Israel October 9, 2023. (Reuters)
Israel's Iron Dome anti-missile system intercepts rockets launched from the Gaza Strip, as seen from the city of Ashkelon, Israel October 9, 2023. (Reuters)
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What Went Wrong? Questions Emerge Over Israel’s Intelligence Prowess After Hamas Attack 

Israel's Iron Dome anti-missile system intercepts rockets launched from the Gaza Strip, as seen from the city of Ashkelon, Israel October 9, 2023. (Reuters)
Israel's Iron Dome anti-missile system intercepts rockets launched from the Gaza Strip, as seen from the city of Ashkelon, Israel October 9, 2023. (Reuters)

For Palestinians in Gaza, Israel’s eyes are never very far away. Surveillance drones buzz constantly from the skies. The highly-secured border is awash with security cameras and soldiers on guard. Intelligence agencies work sources and cyber capabilities to draw out a bevy of information.

But Israel’s eyes appeared to have been closed in the lead-up to an unprecedented onslaught by the Hamas movement, which broke down Israeli border barriers and sent hundreds of gunmen into Israel to carry out a brazen attack that has killed hundreds and pushed the region toward conflict.

Israel’s intelligence agencies have gained an aura of invincibility over the decades because of a string of achievements. Israel has foiled plots seeded in the West Bank, allegedly hunted down Hamas operatives abroad and has been accused of killing Iranian nuclear scientists in the heart of Iran. Even when their efforts have stumbled, agencies like the Mossad, Shin Bet and military intelligence have maintained their mystique.

But the weekend’s assault, which caught Israel off-guard on a major Jewish holiday, plunges that reputation into doubt and raises questions about the country’s readiness in the face of a weaker but determined foe. Over 24 hours later, Hamas fighters continued to battle Israeli forces inside Israeli territory, and dozens of Israelis were in Hamas captivity in Gaza.

“This is a major failure,” said Yaakov Amidror, a former national security adviser to Prime Minister Benjamin Netanyahu. “This operation actually proves that the (intelligence) abilities in Gaza were no good.”

Amidror declined to offer an explanation for the failure, saying lessons must be learned when the dust settles.

Rear Adm. Daniel Hagari, the chief military spokesman, acknowledged the army owes the public an explanation. But he said now is not the time. “First, we fight, then we investigate,” he said.

Some say it is too early to pin the blame solely on an intelligence fault. They point to a wave of low-level violence in the West Bank that shifted some military resources there and the political chaos roiling Israel over steps by Netanyahu's far-right government to overhaul the judiciary. The controversial plan has threatened the cohesion of the country's powerful military.

But the apparent lack of prior knowledge of Hamas' plot will likely be seen as a prime culprit in the chain of events that led to the deadliest attack against Israelis in decades.

Israel withdrew troops and settlers from the Gaza Strip in 2005, stripping it of a close handle on the happenings in the territory. But even after Hamas overran Gaza in 2007, Israel appeared to maintain its edge, using technological and human intelligence.

It claimed to know the precise locations of Hamas leadership and appeared to prove it through the assassinations of militant leaders in surgical strikes, sometimes while they slept in their bedrooms. Israel has known where to strike underground tunnels used by Hamas to ferry around fighters and arms, destroying miles (kilometers) of the concealed passageways.

Despite those abilities, Hamas was able to keep its plan under wraps. The ferocious attack, which likely took months of planning and meticulous training and involved coordination among multiple armed groups, appeared to have gone under Israel's intelligence radar.

Amir Avivi, a retired Israeli general, said that without a foothold inside Gaza, Israel's security services have come to rely increasingly on technological means to gain intelligence. He said gunmen in Gaza have found ways to evade that technological intelligence gathering, giving Israel an incomplete picture of their intentions.

“The other side learned to deal with our technological dominance and they stopped using technology that could expose it,” said Avivi, who served as a conduit for intelligence materials under a former military chief of staff. Avivi is president and founder of Israel Defense and Security Forum, a hawkish group of former military commanders.

“They've gone back to the Stone Age,” he said, explaining that militants weren't using phones or computers and were conducting their sensitive business in rooms specially guarded from technological espionage or going underground.

But Avivi said the failure extends beyond just intelligence gathering and Israel's security services failed to put together an accurate picture from the intelligence they were receiving, based on what he said was a misconception surrounding Hamas' intentions.

Israel's security establishment has in recent years increasingly seen Hamas as an actor interested in governing, seeking to develop Gaza's economy and improving the standard of living of Gaza's 2.3 million people. Avivi and others say the truth is that Hamas, which calls for Israel's destruction, still sees that aim as its priority.

Israel in recent years has allowed up to 18,000 Palestinian laborers from Gaza to work in Israel, where they can earn a salary about 10 times higher than in the impoverished coastal enclave. The security establishment saw that carrot as a way to maintain relative calm.

“In practice, hundreds if not thousands of Hamas men were preparing for a surprise attack for months, without that having leaked,” wrote Amos Harel, a defense commentator, in the daily Haaretz. “The results are catastrophic.”

Allies who share intelligence with Israel said security agencies were misreading reality.

An Egyptian intelligence official said Egypt, which often serves as a mediator between Israel and Hamas, had spoken repeatedly with the Israelis about “something big,” without elaborating.

He said Israeli officials were focused on the West Bank and played down the threat from Gaza. Netanyahu's government is made up of supporters of Jewish West Bank settlers who have demanded a security crackdown in the face of a rising tide of violence there over the last 18 months.

“We have warned them an explosion of the situation is coming, and very soon, and it would be big. But they underestimated such warnings,” said the official, who spoke on condition of anonymity because he wasn't authorized to discuss the content of sensitive intelligence discussions with the media.

Israel has also been preoccupied and torn apart by Netanyahu's judicial overhaul plan. Netanyahu had received repeated warnings by his defense chiefs, as well as several former leaders of the country's intelligence agencies, that the divisive plan was chipping away at the cohesion of the country's security services.

Martin Indyk, who served as a special envoy for Israeli-Palestinian negotiations during the Obama administration, said internal divisions over the legal changes was an aggravating factor that contributed to the Israelis being caught off guard.

“That roiled the IDF in a way that was, I think, we discovered was a huge distraction,” he said.



10 Key Moments in the Israel-Hamas War

A drone view shows displaced Palestinians walking past the rubble as they attempt to return to their homes, amid a ceasefire between Israel and Hamas, in the northern Gaza Strip, January 19, 2025. (Reuters)
A drone view shows displaced Palestinians walking past the rubble as they attempt to return to their homes, amid a ceasefire between Israel and Hamas, in the northern Gaza Strip, January 19, 2025. (Reuters)
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10 Key Moments in the Israel-Hamas War

A drone view shows displaced Palestinians walking past the rubble as they attempt to return to their homes, amid a ceasefire between Israel and Hamas, in the northern Gaza Strip, January 19, 2025. (Reuters)
A drone view shows displaced Palestinians walking past the rubble as they attempt to return to their homes, amid a ceasefire between Israel and Hamas, in the northern Gaza Strip, January 19, 2025. (Reuters)

After the Palestinian group Hamas carried out the worst attack in Israeli history on October 7, 2023, Israel launched a devastating military campaign in the Gaza Strip.

Before a ceasefire began on Sunday, only the second truce in 15 months of war, Israel's air and ground campaign killed at least 46,899 people, according to figures from the Hamas-run territory's health ministry that the United Nations considers reliable.

Following are key moments in the conflict:

At dawn on October 7, hundreds of Hamas fighters infiltrate Israel, killing civilians in the streets, in their homes and at a desert music festival, and attacking troops in bases.

They seize 251 hostages and take them back to Gaza. Currently 94 are still held there, with three women due for release Sunday. Israel's military says 34 of the 94 hostages are dead.

The Hamas attacks result in the deaths of more than 1,200 people.

Israeli Prime Minister Benjamin Netanyahu vows to destroy Hamas, which is considered a terrorist organization by the United States, European Union and Israel.

Israel begins bombing and besieging Gaza. On October 13, it calls on civilians in the territory's north to move south.

The vast majority of Gazans have been displaced during the war, according to the UN.

On October 27, Israel begins a ground offensive.

On November 24, a week-long truce between Israel and Hamas begins.

Hamas releases 105 hostages, mostly Israeli but also Thai workers, in return for 240 Palestinians held in Israeli prisons.

When the war resumes, Israel expands its actions into southern Gaza.

On February 29, 2024, Israeli forces fire on northern Gaza residents who rush a convoy of food aid trucks, killing 120 and wounding hundreds.

From early March military aircraft from several countries including the United States drop aid over Gaza which the UN says is threatened by famine.

On April 1, seven aid workers from US charity World Central Kitchen are killed in a strike which Israel's military calls a "tragic mistake".

On April 13, Iran pounds Israel with drones and missiles -- its first-ever direct assault on Israel's soil. The strikes are retaliation for a deadly April 1 attack on its Damascus consulate, blamed on Israel.

On July 20, Israel bombards Yemen's port of Hodeidah, after a drone attack on Tel Aviv by Iran-backed Houthi militias who have been targeting shipping since November 2023 in solidarity with Gaza.

At the Israeli-Lebanon border, almost daily exchanges since October 2023 between Israel and Lebanese armed group Hezbollah intensify in July.

Israel retaliates with several strikes, including one that kills a top Hezbollah commander, Fuad Shukr.

On July 31, Hamas political leader Ismail Haniyeh is killed on a visit to Iran. Israel accepts responsibility months later.

On September 17 and 18, hundreds of pagers and walkie-talkies used by Hezbollah explode in an Israeli operation that Lebanese authorities say kills 39 and wounds thousands.

Israel escalates its air campaign in Lebanon and on September 27 kills Hezbollah leader Hassan Nasrallah in southern Beirut.

Days later, Israel launches a ground offensive in southern Lebanon against Hezbollah strongholds.

Iran on October 1 fires a barrage of 200 missiles at Israel in response to the killing of Nasrallah and Haniyeh.

On October 16, new Hamas leader Yahya al-Sinwar, accused by Israel of masterminding the October 7, 2023 attack, is killed in southern Gaza.

On the 26th, Israeli air strikes hit military targets in Iran in response to the October 1 missile attack.

On November 14, a United Nations Special Committee says Israel's warfare in Gaza is consistent with the characteristics of "genocide". Israel accuses the UN of bias.

The International Criminal Court on November 21 issues arrest warrants for Netanyahu, former defense minister Yoav Gallant, and Hamas military chief Mohammed Deif, whom the Israeli military says it killed in Gaza.

A truce begins on November 27 after two months of open war between Israel and Hezbollah which has left more than 4,000 dead on the Lebanese side since October 2023, according to official Lebanese figures.

The fragile ceasefire is breached several times, with both sides trading blame.

After the ousting of Syrian president Bashar al-Assad by opposition factions in December, Israel also conducts hundreds of strikes on Syria's military sites, saying it aims to prevent weapons from falling into the hands of "extremists".

Israel also sends troops into the UN-patrolled buffer zone in the Golan Heights.

Yemen's Houthis step up missile and drone attacks on Israel which responds with new attacks on Yemen.

On January 19, a long-awaited truce between Israel and Hamas begins, with 33 hostages due to be freed during the first phase in exchange for the release of about 1,900 Palestinians in Israeli custody.

Under the truce mediated by Qatar, the United States and Egypt, thousands of war-weary displaced Palestinians begin returning to their homes through the rubble of the devastated Gaza Strip.