Web site defacement has become a common threat for organizations exposed on the web. There exist several statistics that indicate the number of incidents of this sort but there is a crucial piece of information still lacking: the typical duration of a defacement. Clearly, a defacement lasting one week is much more harmful than one of few minutes. In this paper we present the results of a two months monitoring activity that we performed over more than 62000 defacements in order to figure out whether and when a reaction to the defacement is taken. We show that such time tends to be unacceptably long---in the order of several days---and with a long-tailed distribution. We believe our findings may improve the understanding of this phenomenon and highlight issues deserving attention by the research community. 

Alberto Bartoli, Giorgio Davanzo, Eric Medvet,
IEEE Internet Computing
vol. 13, n. 4, pp. 52-58, July/August 2009.

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Sul numero July/August 2009 della rivista scientifica IEEE Internet Computing è stato pubblicato questo articolo.

Importante da segnalare non solo per il contenuto e per la rilevanza della rivista, ma anche perché ottenuto a partire da una tesi di laurea specialistica di un nostro studente (Giorgio Davanzo).

Se qualcuno volesse leggerlo, invii una mail al prof. Bartoli.