Chinese Firm Says Its Cameras Were Used to Take Down Internet

A Chinese security camera maker said its products were used to launch a cyber-attack that severed internet access for millions of users, highlighting the threat posed by the global proliferation of connected devices.

The attackers hijacked CCTV cameras made by Hangzhou Xiongmai Technology Co. using malware known as Mirai, the company said in an e-mailed statement. While Xiongmai didn’t say how many of its products had been infiltrated, all cameras made before September 2015 were potentially vulnerable.