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[liberationtech] Browser-based Tor proxies

Gregory Foster gfoster at
Thu Jan 3 19:14:53 PST 2013

Here's a perspective on the project and its current challenges from 
Jacob Appelbaum and Roger Dingledine's Tor ecosystem talk at 29C3:


On 1/3/13 7:25 PM, Steve Weis wrote:
> I noticed a Stanford project for setting up browser-based, ephemeral 
> Tor proxies. In their words, "the purpose of this project is to create 
> many, generally ephemeral bridge IP addresses, with the goal of 
> outpacing a censor's ability to block them."
> The core idea is that volunteers outside a filtered region can embed 
> an "Internet Freedom" badge on their web pages. Visitors browsing from 
> outside a filtered region can become short-lived proxies that relay 
> traffic to and from the filtered region. When visitors navigate away 
> from a volunteer page, the proxy disappears.
> Note that "flash" is not a reference to Adobe Flash. It's based on 
> Websockets and Javascript.
> Also, I am not endorsing this technology for real-world use yet nor 
> can attest to its security. I haven't looked at it in enough detail yet.

Gregory Foster || gfoster at
@gregoryfoster <>

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