Privacy, Security Tutorial: How to Enable or Disable DOM Storage “Cookies” in Firefox?

If you are worried about cookies, you should not only be concerned about regular cookies. There are also flash and DOM cookies. Most people do not even know about DOM cookies – which can be disabled easily

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What Browsers Use DOM Cookies?

DOM – short for Document Object Model – is a new cookie that is included in the following browser:

  • Safari 4 and higher
  • Chrome 4 and higher
  • Opera 10.5 and higher
  • Firefox 3 and higher
  • IE8 and higher

This tutorial explains how to disable DOM cookies in Firefox

General Info:

DOM Storage is often compared with HTTP Cookies. DOM cookies store session specific, domain specific data as name/value pairs on the client-side. There is session storage and the localstorage.

As the name suggest, session storage only stores data during a regular session e.g. one visit to a particular website. Local storage on the other hand can be used for multiple sessions (multiple visits) and multiple browser windows.


Enable or Disable DOM Storage “Cookies” in Firefox

1. Step Open Mozilla Firefox-> In the Address bar type about:config-> Press Enter.


2. Step A message will come This might Void your Warranty-> Click on I’ll be careful, I promise!

Message I will Be Careful

3. Step From the long list, find The default value is true.

Dom Storage Enabled

4. Step Double click to change the value to false and you are done.

Dom Storage Disabled

Published: Thursday, August 23rd, 2012 Last Modified: August 23, 2012