Child pornography is a multi-billion dollar industry and among the fastest growing crime activities on the Internet , according to the USA The National Center for Missing and Exploited Children ( NCMEC ) , the International Centre for Missing & Exploited Children ( ICMEC ) and other international sources . According to the NCMEC , almost one fifth of all Internet pornography is child pornography . A 2008 review of child pornography laws in 187 countries by the International Centre for Missing & Exploited Children ( ICMEC ) shows that 93 have no laws that specifically address child pornography .