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But as the current effort shows, bin Laden is very difficult to track down, even under circumstances where we have substantial military assets deployed.
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"Bot-herders and other 'spam kings' are difficult to track down, especially in so many different jurisdictions and areas around world, with no enforced policies against them, " Manky observes.
CNN: Fighting the agents of organized cybercrime
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Law enforcement agencies had also complained that some of the devices used duplicated IMEI (International Mobile Equipment Identifier) codes, making it difficult to track down users suspected of using their handsets to plan crimes.
BBC: Kenya to switch off 'fake' mobile phones
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The current study is difficult to track down.
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They had come to Pakistan on valid visas, so it will not be difficult to track them down and expel them.
NPR: Pakistani Religious Schools to Defy Expulsion Order
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"It is really difficult to track some of those down when all you have is a purported e-mail from somebody named Janet, and no other identifying information, " David Mikkelson said.
CNN: AP photo
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The second phase will be to track down the militants to their desert hideouts, which could prove a much more difficult task, he adds.
BBC: Mali crisis: French-led troops 'surround Timbuktu'
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"It was going to be difficult chasing 200 plus on a track where the ball is going up and down, " said Tendulkar, who was named man of the match and man of the series for scoring 403 runs at an average of 134.5.
BBC: India storm to victory over Australia to win series 2-0