The census of the internet

We have completed, to our knowledge, the largest and most comprehensive IPv4 census ever. With a growing number of IPv6 hosts on the Internet, 2012 may have been the last time a census like this was possible.

We hope other researchers will find the data we have collected useful and that this publication will help raise some awareness that, while everybody is talking about high class exploits and cyberwar, four simple stupid default telnet passwords can give you access to hundreds of thousands of consumer as well as tens of thousands of industrial devices all over the world.

http://internetcensus2012.bitbucket.org/paper.html