Thousands of routers exposed on the Internet by the ISPs are vulnerable to hacking and consequence of attacks on a large scale could be dramatic. ISPs have provided at least 700,000 ADSL routers to the public and unfortunately these kinds of routers have been really vulnerable to every possible hacker who wants to gain the control of the computer of a possible victim. Most of the routers have already be violated from attackers who have managed to collect everything that they want and most of the IP addresses were located in China.”]
Source: http://securityaffairs.co/wordpress/35248/hacking/hacking-vulnerable-routers.html