Illegal logging is a big issue. Approximately 30% to 50% of all timber traded globally is illegally sourced. Illegal logging comes in many forms. It may be the replacement of high value for low value timber products, it may incorrect declaration of species or region of origin of products, which masks trade in endangered species or export of timber from protected areas, or it may be the mixing of illegitimately and legitimately sourced timber. 

Combating illegal logging also needs to take many forms, many of these are technology solutions that support behaviour change.