TrendMicro published a new chapter of the Cybercriminal Underground Economy Series in which analyzed the Chinese underground. Experts analyzed more than 1.4 million instant chat messages related to activities in the market for popular instant-messaging (IM) QQ app alone. Mobile underground market is the most prolific segment, the black market if focused on the sale/rent of products and services for cyber attacks on mobile platforms, mainly Android platforms. DDoS toolkits are becoming more available and cheaper; some are even offered free of charge.”]
Source: http://securityaffairs.co/wordpress/28074/cyber-crime/chinese-underground.html