Re: [tor-dev] Tor Browser downloads and updates graphs

[Karsten Loesing <karsten@xxxxxxxxxxxxxx>]

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On 17/09/16 18:28, Aaron Johnson wrote:
>>> Here's
>>> 
>>> the same graph with more data, more request types, and of
>>> course a lot more shininess:
>>> 
>>> https://tor-metrics.shinyapps.io/webstats/ 
>>> <https://tor-metrics.shinyapps.io/webstats/>...
>> If you feel that's interesting enough, would it be possible to 
>> also add the number of download of cryptographic signatures to
>> the graph?
>> 
>> I also would love to see a breakdown by operating systems if you
>>  consider it a reasonable thing to do.
> 
> To these requests I would add a request for the methodology behind 
> releasing these stats. Are they raw numbers? Rounded? More
> generally, how are the web logs sanitized? I’m interested in how
> safe these statistics are to release and how they might be changed
> to be even more privacy-preserving.

Good thinking!  I summarized the methodology on the graph page as: The
graph above is based on sanitized Tor web server logs [0]. These are a
stripped-down version of Apache's "combined" log format without IP
addresses, log times, HTTP parameters, referers, and user agent strings.

[0] https://webstats.torproject.org/

I guess we'll write down the sanitizing process in more detail once we
make this part of CollecTor, but that may take a few more weeks or
even months.

If you spot anything in the data that you think should be sanitized
more thoroughly, please let us know!

> Thanks, Aaron

All the best,
Karsten
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