In his own research, Zach Varnell, senior appsec consultant at security firm nVisium, has found millions of potentially exposed connected and internet of things devices.

“A quick search of Shodan shows over 5 million devices with UPnP exposed to the internet. At the very least, botnet operators will use this for DDoS attacks. In more serious cases, a vulnerable security camera or printer could give attackers a foothold into a corporate network,” Varnell says.

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