Image: The insecure internet.
A security researcher scanned the internet for unprotected embedded devices, and here’s the graphical result: 420,000 clients which were able to be accessed and analysed. The animated graphic above shows day/night variations in the number of available connections.
This scan was done in 2012 using IPv4 addresses. According to the researcher, “with a growing number of IPv6 hosts on the Internet, 2012 may have been the last time a census like this was possible”.