Re: Bridges and China (new thread)

2010-05-26 Thread Ryan Day
On Wed, May 26, 2010 at 3:42 PM, Al MailingList alpal.mailingl...@gmail.com
 wrote:


 Is it worth adding a captcha to bridges.torproject.org? Incidentally,
 what happens when adversaries just block access to that site?

 How about responding to bridge request emails with a captcha style
 email attachment with the IPs of bridges?

 That would kill any automated attempt to scrape the bridges?

 Al


I have a project called ObfuscaTOR which reads bridge information and
displays it using captcha-style encoding.  Its a wordpress plugin, and
development is kinda stalled.  There have been some downloads, and a Reddit
post, but other then that interest seemed kind of low.  I even had one guy
email me to remove the project as I was helping to destroy the Tor Project.

This gets around adversaries blocking access because any one of the
millions of bloggers can include the plugin, so you can't block the whole
internet(unless you have a country wide firewall of course;)   As far as
automated scanning, I have heard China doesn't automate the process so much
as they have thousands of workers manually scanning for things such as this.

I like your email idea though,  its a lot easier to track and block email
requests from the same domain.  It seems like it would be a lot harder to
setup lots of fake mail servers.  How about incoming email being filtered
based on the sender however?


Ryan


Re: Distribution of bridge information

2009-11-03 Thread Ryan Day
On Tue, Nov 3, 2009 at 4:08 AM, hgiuh ghj h106...@hotmail.com wrote:

  I think we should implement a captcha ASAP on bridges.torproject.org. I
 don't know why it hasn't been done it's a big security hole for the whole
 network.



It will give the same 3 bridge IP's to the same requesting IP address for
almost a whole day, so you only lose 3 addresses at a time. This could still
be taken advantage of, especially by an organization controlling many IPs.
 I agree though, hopefully we can gather more, and better, algorithms to put
in this library. Then build systems like this to help hide the bridge IPs.





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