@conference{CGKP11, author = "Juan Caballero and Chris Grier and Christian Kreibich and Vern Paxson", address = "San Francisco, CA", booktitle = "Proceedings of the the 20th USENIX Security Symposium", month = "August", note = "PARTNERS: IMDEA PROJECTS: NSF- 0433702, CNS-0905631, CNS-0831535, Office of Naval Research under MURI Grant No. N000140911081, FP7-ICT No. 256980, FP7- PEOPLE-COFUND No. 229599 TIER: A CITATIONS:8", title = "{M}easuring {P}ay-per-{I}nstall: {T}he {C}ommoditization of {M}alware {D}istribution", year = "2011", }