The action of stealing someone’s personal data in order to use it in a fraudulently way is a crime which do more and more victims each year. CIFAS, the UK’s Fraud Prevention Service identified about 77,642 victims of identity fraud in 2008 according to their website. The more frightening is that the guilty parties often remain uncaught because an identity fraud is mainly operated from a distance. In UK, the latest estimate is that identity fraud represented a loss of £1.7 billion to the economy in 2006 (Home Office Identity Fraud Steering Committee, 2006). Actually, the personal data stolen can be used in other regions or countries so it remains very difficult for the police to pursue these law offenders. To illustrate this point, let us talk about a very famous actuality fact that happened in USA. In 2007, a gunman opened fire on cops killing one officer and injuring three other. Then, hundreds of policeman took control of the area all looking for one man: Kevin Wehner. Some hours later, his picture was shown on all American televisions saying that he was the one who killed a policeman in Miami. In fact, Mr Wehner was more than 350 miles away in his little house taking care of his children with his wife. When armed cops entered his house, he was in shock. He explained later that for more than three years he had been complaining about someone stealing his identity and asking for credits and driver licence. The investigation finally started in order to find the offender (CBS4, 2007). Of course this kind of fraud is not as spectacular as in this story but what is sure is that you can be a victim without knowing it which can lead to bad surprises.