Your web browser reveals more information than you think. Notably, with each web access the browser reveals the Operating System (e.g. Windows 8.1, Mac OS X 10.9, or Ubuntu 14.04) and the CPU. Check the Masking Agent demo for your configuration. Mostly, the information about your platform is not needed to browse the web, at all. If you're using an older, more vulnerable computer, you may not want to be so generous with this information. In general, it's a good idea to control the information that you transmit.
There are several Firefox add-ons available that let you mimic a completely different browser, i.e. browser application and platform. But none of them meet my requirements:
So, I made Masking Agent.
The information shown below is available to every web site. If you don't have Masking Agent installed and enabled, your platform details are plainly visible. Revisit this page with Masking Agent installed to see the differences.
|HTTP||User-Agent||browser signature||CCBot/2.0 (http://commoncrawl.org/faq/)|
Masking Agent is hosted at a Mozilla add-on page: https://addons.mozilla.org/en-US/firefox/addon/masking-agent/.
You can download it directly: https://addons.mozilla.org/firefox/downloads/latest/371677/addon-371677-latest.xpi.
Does the User-Agent automatically increment Firefox application versions?
What is used to replace the platform information?
Can I replace the platform details with anything I like?
Does everything still work after I install it?
What are the risks?
Is my privacy protected with this add-on?
A web site displays the mobile version of its web pages.
The Firefox version is not incremented in the User-Agent after a Firefox update.
The User-Agent set by Masking Agent persists after disabling or uninstalling the add-on.
When the add-on is not working as described:
Please add your review at https://addons.mozilla.org/en-US/firefox/addon/masking-agent/reviews/add.