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Posts tagged “Brandon Mayfield

Beyond C.S.I.: The Rise of Computational Forensics ?

Atocha, Madrid - 11 March 2004

Another fine article picked out by Bruce in the last issue of cryptogram.

Interesting story on Brandon Mayfield, in particular what happened to Mayfield. Mayfield being a Lawyer and if the Algerian hadn’t come to light, it might have proved a very interesting case. Some snippets and link to full article below:

” .. If the Shoe Print Fits

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On 6 May 2004, a Portland, Oregon, lawyer named Brandon Mayfield was arrested for his alleged involvement in the terrorist bombings of four commuter trains in Madrid. The attacks killed 191 people and injured 2000 others. But Mayfield had never been to Spain, and his passport at the time was expired. The sole evidence against him was a partial fingerprint found on a plastic bag in a van used by the bombers. The FBI’s Integrated Automated Fingerprint Identification System had identified Mayfield as a possible match, and three FBI fingerprint experts as well as an outside analyst confirmed the identification.

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The analysts knew that Mayfield had converted to Islam, was married to an Egyptian woman, and had once represented a man in a child custody case who later turned out to be part of a jihadist group. That information swayed the FBI inquiry in Mayfield’s direction.

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Spanish authorities, however, argued that the fingerprint belonged not to Mayfield but to an Algerian with a criminal record, Spanish residency, and terrorist links. They were right. It took almost three weeks from his arrest, but Mayfield was cleared of the charges and released from federal custody. The U.S. government eventually agreed to pay him US $2 million for the mistake and issued a formal apology.

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Nike Air Force 1 [sneaker] is the most often encountered at U. S. crime scenes, turning up in about 17 percent of cases.

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Pattern recognition and other computational methods can reduce the bias inherent in traditional criminal forensics

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What computational forensics—or any forensics method, really—cannot do is determine whether a suspect did or did not commit the offense. That’s a matter for a judge and jury to decide. At trial, the role of a forensics expert is to testify whether the profile drawn from the evidence matches that of the suspect or of an unrelated person.

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Among all the classical forensics methods, the committee concluded, only DNA analysis has been shown to be scientifically rigorous .. ”

Sargur N. Srihari,, December 2010 – last access 19 January 2011 – ( Full Article )