@mastersthesis{EURECOM+3929,
  author = {Costin, Andrei and  Isacenkova, Jelena and  Balduzzi, Marco and  Francillon, Aurélien and  Balzarotti, Davide},
  title = {The role of phone numbers in understanding cyber-crime},
  year = {2013},
  note = {© EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in Research Report RR-13-277 and is available at :},
}