Botnet Of Embedded Devices Used To Map Internet

### Executive Summary The report covers the "Internet Census 2012" (Carna) botnet in which an unknown researcher/hacker compromised around 420,000 internet-connected devices (consumer routers, set-top boxes, and some infrastructure equipment) to perform distributed scanning of the entire IPv4 space between March and December 2012, collecting ~9 TB of data using a custom binary, nmap, ICMP pings and reverse DNS; while presented as research, the activity involved illegal remote control and rebooting of hosts and highlights widespread insecure embedded devices.