The spread of counterfeit goods (commonly called "knock-offs" or "rip-offs") has become global in recent years and the range of goods subject to infringement has increased significantly. Apparel and accessories accounted for over 50 percent of the counterfeit goods seized by U.S Customs and Border Control. According to the study of Counterfeiting Intelligence Bureau (CIB) of the International Chamber of Commerce (ICC), counterfeit goods make up 5 to 7% of world trade; however, these figures cannot be substantiated due to the secretive nature of the industry.