Number of Crank Calls Marked by Users, Monitored by Major 100million Internet Security Enterprises 150 131.5 120 117.2 92.9 90 60 49.5 30 0 Jan.–Mar. Apr.–Jun. Jul.–Sep. Oct.–Dec. Source: 360 Security Center and Tencent Security 2016.12 Figure 85 Number of Crank Calls Marked by Users, Monitored by Major Internet Security Enterprises 110 The 39th Statistical Report on Internet Development in China