Slashdot Mirror
Is China Creating the World's Largest Botnet Army?
david_a_eaves writes "The Chinese government is mandating that all computers sold in China come with Internet blocking software. Rob Cottingham writes an excellent piece noting how the censorship application of this software should be the least of our concerns. This new software may create an opportunity for the Chinese Government to appropriate these computers and use them to create the worlds largest botnet army."
Update: 06/11 21:26 GMT by T : J. Alex Halderman writes "My students and I have been examining the Green Dam censorware software. We've found serious vulnerabilities that can be exploited by any web site a user visits with the software installed. We also found that some of the blacklists seems to have been taken from the American-made filtering program CyberSitter. We've posted a report and demo."
What makes a botnet potentially devastating is that it can create traffic that's indistinguishable from legitimate traffic. When a large enough number of computers from random locations request a page from your webserver, how do you sort the bad requests from the good? It's the slashdot effect on steroids.
If all the traffic was originating from within a particular country, it would be straightfoward to drop that traffic and let other traffic through.
It's interesting to note that in the early days, it wasn't possible to determine geographic location based on IP address. Address blocks were originally assigned rather haphazardly. As the number of networks grew, routers had to store larger and larger routing tables. Eventually this led to a push to reorganize address block allocations in a more hierarchical fashion, which ultimately made geolocation possible.