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Edward Snowden
World

NSA data used to foil Wall Street bomb plot, says US spy chief

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Army General Keith Alexander, director of the National Security Agency, testifies before a US House panel on Wednesday. Photo: Reuters

The US foiled a plot to bomb the New York Stock Exchange because of the sweeping surveillance programmes at the heart of a debate over national security and personal privacy, officials said on Tuesday at a rare open hearing on intelligence led by lawmakers sympathetic to the spying.

The House Intelligence Committee hearing provided a venue for officials to defend the once-secret programmes and did little probing of claims that the collection of people’s phone records and internet usage has disrupted dozens of terrorist plots. Few details were volunteered.

Army General Keith Alexander, director of the National Security Agency, said the two recently disclosed programmes – one that gathers US phone records and another that is designed to track the use of US-based internet servers by foreigners with possible links to terrorism – are critical. But details about them were not closely held within the secretive agency. Alexander said after the hearing that most of the documents accessed by Edward Snowden, a 29-year-old former systems analyst on contract to the NSA, were on a web forum available to many NSA employees. Others were on a site that required a special credential to access. Alexander said investigators are studying how Snowden did that.

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He told lawmakers Snowden’s leaks have caused “irreversible and significant damage to this nation” and undermined the US relationship with allies.

When deputy FBI director Sean Joyce was asked what is next for Snowden, he said, simply, “justice”. Snowden fled to Hong Kong and is hiding.

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The New York Stock Exchange was a target of an attack. Photo: Reuters
The New York Stock Exchange was a target of an attack. Photo: Reuters
In the days after the leaks, House Intelligence committee chairman Mike Rogers cited one attack that he said was thwarted by the programmes. In the comments of other intelligence officials, that number grew to two, then 10, then dozens. On Tuesday, Alexander said more than 50 attacks were averted because of the surveillance. These included plots against the New York subway system and a Danish newspaper office that had published cartoon depictions of Muhammad.

In a new example, Joyce said the NSA was able to identify an extremist in Yemen who was in touch with Khalid Ouazzani in Kansas City, Missouri, enabling authorities to identify co-conspirators and thwart a plot to bomb the New York Stock Exchange.

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