Google-chrome – How to disable permission to read ‘System Fonts’ and ‘Browser Plugin Details’ in Chrome and Firefox

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Going to http://panopticlick.eff.org/ I can see that that Firefox and Chrome expose more about 'System Fonts' and 'Browser Plugin Details' than I prefer.

How can the permission of a web page to access these settings be disabled in Firefox and Chrome?

Best Answer

There are two questions but I am answering the font list question:

It is possible to disable Flash font enumeration using mms.cfg system wide configuration file. This file should be located in /etc/adobe/ directory if you are using Linux. Basically you just need to put the following line in the file:

DisableDeviceFontEnumeration = 1

See the Adobe Flash Player Administration Guide for more details.

With this setting Panopticlick and other sites can not get your font list via Flash.

Note that the font list is still available through Java if you have it installed. It is a good idea to get rid of Java anyway. If you use a couple of sites that require Java, use a different browser instance with a different user profile with Java enabled just for those sites.

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