TY  - JOUR
PY  - 2015//
TI  - Characterization of contact offenders and child exploitation material trafficking on five peer-to-peer networks
JO  - Child abuse and neglect
A1  - Bissias, George
A1  - Levine, Brian
A1  - Liberatore, Marc
A1  - Lynn, Brian
A1  - Moore, Juston
A1  - Wallach, Hanna
A1  - Wolak, Janis
SP  - 185
EP  - 199
VL  - 52
IS  - 
N2  - We provide detailed measurement of the illegal trade in child exploitation material (CEM, also known as child pornography) from mid-2011 through 2014 on five popular peer-to-peer (P2P) file sharing networks. We characterize several observations: counts of peers trafficking in CEM; the proportion of arrested traffickers that were identified during the investigation as committing contact sexual offenses against children; trends in the trafficking of sexual images of sadistic acts and infants or toddlers; the relationship between such content and contact offenders; and survival rates of CEM. In the 5 P2P networks we examined, we estimate there were recently about 840,000 unique installations per month of P2P programs sharing CEM worldwide. We estimate that about 3 in 10,000 Internet users worldwide were sharing CEM in a given month; rates vary per country. We found an overall month-to-month decline in trafficking of CEM during our study. By surveying law enforcement we determined that 9.5% of persons arrested for P2P-based CEM trafficking on the studied networks were identified during the investigation as having sexually offended against children offline. Rates per network varied, ranging from 8% of arrests for CEM trafficking on Gnutella to 21% on BitTorrent. Within BitTorrent, where law enforcement applied their own measure of content severity, the rate of contact offenses among peers sharing the most-severe CEM (29%) was higher than those sharing the least-severe CEM (15%). Although the persistence of CEM on the networks varied, it generally survived for long periods of time; e.g., BitTorrent CEM had a survival rate near 100%.    Keywords: Human trafficking<p />  <p>Language: en</p>
LA  - en
SN  - 0145-2134
UR  - http://dx.doi.org/10.1016/j.chiabu.2015.10.022
ID  - ref1
ER  -