“These compromised IoT devices, like smart cameras or a router, have enough computational power that you can use networks of tens of thousands of them to do a denial of service attack,” Yuvraj Agarwal, a computer science professor at Carnegie Mellon, told CNET.

A 'well-resourced and highly capable adversary' gains unauthorized access to 9,000 routers, likely trying to infect them with malware and create a botnet.

Cybercriminals have hacked into thousands of Asus routers, possibly as a prelude to a widescale botnet attack, says a security firm.