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2. Anderson, Ross (2001), “Reply to the Times Article: Secrets Concealed by Software” at 〈http://lists.jammed.com/crime/2001/10/0027.html〉.
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5. Associated Press (2001), “Bin Laden’s Cybertrail Proves Elusive,” in USA Today, September 20 at 〈http://www.usatoday.com/tech/news/2001/09/20/attacks-cybertrail.htm〉.