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He also appears to have recognized when he was at risk of tripping intelligence wires. In an entry from this past March, he outlines his effort obtain aluminum powder
-- intended as a component for the bomb -- from Polish supplier Keten Chemicals. It turns out Keten was being watched by Interpol, the international police agency based in France, which reported orders by 50-60 Norwegians to the country's intelligence officials. But Kristiansen's agency said that after looking into the list, the agency did not find any reason to pursue an investigation of Breivik. "I regret placing the order as I see, in retrospect, that Keten is likely to be closely monitored by a majority of European intelligence agencies," Breivik writes. Breivik's purchases, along with his postings on websites run by far-right extremists, beg the question of whether there might not been a way to foil his plot. But the experience of the U.S. -- where domestic terrorist Timothy McVeigh killed 168 with a truck bomb crafted using the same chemical as Breivik
-- showcases some of the challenges of tightening the net to prevent such acts. After Oklahoma City attack in 1995, U.S. officials set out to prevent a similar attack. A committee chartered by the National Academy of Sciences recommended in 1998 that the government tightly regulate the sale of ammonium nitrate, the key ingredient in McVeigh's bomb and, apparently, in Breivik's. But nearly 16 years after the bombing, the U.S. government is only now nearing imposition of such rules. "What you're up against is the fact that ammonium nitrate is a major agricultural chemical," said Edward Arnett, a professor emeritus of chemistry at Duke University who co-chaired the committee that made the recommendation. "I think the various lobbies that represent agriculture didn't want to have anything stand in the way of buying it." In late 2007, Congress finally passed a law requiring regulation of the chemical's sale. But the Homeland Security department missed its 2008 deadline to publish a final rule. Officials say they will post proposed regulations on sale and transfer of ammonium nitrate this week, after which the public will have 120 days to comment. Meanwhile, in the decade since the September 11, 2001 terrorist attacks, the ability of computers to zero in on terrorists by mining reams advance substantially, said Bhavani Thuraisingham, director of the Cyber Security Research Center at the University of Texas at Dallas. Programmers already have developed technology to detect suspicious links between networks of plotters. Now they are working to create programs capable of detecting outliers. Thuraisingham's fellow researchers are focused on putting that technology to work to spot constantly mutating computer codes deployed by hackers. But it could also be use to spot terrorists who don't fit the expected pattern
-- like the blond-haired, blue-eyed loner in a jacket and tie, Breivik. That search, though, would be greatly complicated in identifying someone who maintained no social networks, she said. And trying to build in privacy protections would make it exceedingly difficult, she said. "It's not magic," Thuraisingham said of the technology. "If there's no data, then all the best data-mining algorithms you can produce will not produce any results."
[Associated
Press;
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