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I'm trying to trick the results in this page to have more privacy/anonymity: https://panopticlick.eff.org/index.php?action=log&js=yes

So far the best I could do is change the user agent, with the "User Agent Switcher" plugin.

Any ideas on how to change the other values? Like the plugin details and the system fonts.

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What are you trying to accomplished by doing this? – superuser Jun 14 '12 at 1:14
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@David More privacy. Not letting random websites gather every bit of information about you is generally a good idea. – HappyDeveloper Jun 14 '12 at 1:20

2 Answers

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There isn't a way to do this yet in Firefox. This is necessary so that the server you are connecting to can know what form to send the content back to you in. The closest analogy I can draw is how SSL sends all of the acceptable connection types (SSL1, TSL, etc.) and the server can pick what it wants to use to communicate. When we are sending all this information to the server we are letting it know that we have these plugins and it can send us content we will be able to use.

If you're concerned about security on your browser, you could use NoScript to block unnecessary scripts from running on your browser. That's means it'll more likely make your browser less "unique".

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For user-agent, you can use "about:config" to create a value called "general.useragent.override" and setting the value to blank (or your favourite user agent).

Setting "plugins.click_to_play" to "true" stops the font enumeration.

"dom.storage.enabled" to "false" might also be useful.

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