Neighborhoods and bands: an analysis of the origins of spam.
Osvaldo L. H. M. FonsecaElverton C. FazzionPedro Henrique B. Las-CasasDorgival Olavo Guedes NetoWagner Meira Jr.Cristine HoepersKlaus Steding-JessenMarcelo H. P. ChavesPublished in: J. Internet Serv. Appl. (2015)