The vast amount of internet-connected devices that fueled the Mirai botnet are only the “tip of the iceberg” when it comes to the denial of service threat from the Internet of Things, according to new research to be presented at the DEF CON security conference later this week. “We estimate up to 95 percent of all IoT devices are deployed behind corporate firewalls,” and not addressable via the public internet, Steinthor Bjarnason, a security engineer with Arbor Networks, told CyberScoop.

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