[tor-dev] Visualization of the lizard Sybil attack

[Arlo Breault]

Very nice.

It seems like the dark (tangent-like) line running through the middle
of the uptimes (not the conspicuous vertical stripe you describe) is
just a consequence of the sorting.

Are the vertical white lines periods where a consensus wasn’t reached?

All the dust (to right at the top, left at the bottom) is kind of interesting.




On Tuesday, January 6, 2015 at 11:36 AM, David Fifield wrote:

> Check out these pictures of relays in the consensus during November and
> December. (Warning, the linked images are huge, just look at the
> downscaled attachments if you want.)
>  
> November
> https://people.torproject.org/~dcf/graphs/microdescs/microdescs-2014-11.png (720×13242 pixels)
>  
> December (spot the anomaly)
> https://people.torproject.org/~dcf/graphs/microdescs/microdescs-2014-12.png (744×18136 pixels)
>  
> Each row is one descriptor, and each column is one hour. The rows are
> sorted so that descriptors with similar uptimes are nearby. The
> conspicuous narrow vertical stripe in the lower right of the December
> graph is a few thousand descriptors entering the consensus all at once
> and then leaving it again.
>  
> If you want to dig into any patterns you see, the lines of these text
> files correspond 1:1 to the rows of the images.
> https://people.torproject.org/~dcf/graphs/microdescs/microdescs-2014-11.txt
> https://people.torproject.org/~dcf/graphs/microdescs/microdescs-2014-12.txt
>  
> Source code is in https://people.torproject.org/~dcf/graphs/microdescs/.
> wget https://collector.torproject.org/archive/relay-descriptors/microdescs/microdescs-2014-{11,12}.tar.xz
> tar xJf microdescs-2014-11.tar.xz
> tar xJf microdescs-2014-12.tar.xz
> ./microdescs --output microdescs-2014-11 microdescs-2014-11
> ./microdescs --output microdescs-2014-12 microdescs-2014-12
>  
> David Fifield
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> tor-dev at lists.torproject.org (mailto:tor-dev at lists.torproject.org)
> https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-dev
>  
>  
> Attachments:  
> - microdescs-2014-11-short.jpg
>  
> - microdescs-2014-12-short.jpg
>