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How to Delete Flash Cookies – Tutorial Preventing Websites from Spying on You

When you watch videos on the internet, Adobe Flash Player stores cookies on your computer. These Flash Cookies or Local Shared Objects (LSOs) may be desirable as they are able to transfer information across different browsers and can better cope with complex data than the normal browser cookies. They save your settings in order to provide enhanced playback.


However, these cookies keep track of your internet preferences and are able to spy on you, invading your private space. You may want to improve your security by using private browsing, which will presumably clear your history and cookies when you log out. However, some flash cookies can recreate other cookies which may keep still keep a tab on you even after you have deleted them.

We are going consider how to delete flash cookies and keep our PCs out of reach of some prying websites.

Managing Cookies Globally

The best way to keep away from cookies is to deny them access to your PC. This can be achieved through the global settings on Adobe’s site for LSO management:

Go to the Global Storage Settings panel and move the slider all the way down to None. By choosing None, whenever you visit Flash-enabled sites, such sites will need to obtain your permission, before downloading flash elements to your computer. Also, See if the box Never Ask Again is checked and uncheck it.

Furthermore, you can also practically delete flash cookies. But note that deleting all LSOs and demanding fresh LSO downloads whenever you log on Flash-supported sites might reduce performance speed.

  • To delete all flash cookies, go to Website Storage Settings tab at the right of the screen and select Delete all sites.
  • To delete a particular flash cookie, from Website Storage Settings, scroll down the list and select the specific website. Then click on Delete Website.

You can also change Flash settings locally on a particular webpage. These changes will not be effected globally and so will not apply to other web pages. For local settings, right-click on the Flash app on the page and specify your settings.

Using BetterPrivacy

If you are making use of Firefox, this is how to delete flash cookies – install and use BetterPrivacy add-on. BetterPrivacy enables you to delete LSOs at the end of each session. After installation, select Options to see the list of Flash cookies. From here, you can specify some settings like creating shortcut key to delete LSOs, deleting LSOs on exit, by timer, and so on. It is also prudent to add LSO item to “Clear History”.

Using CCleaner

For users of other browsers like Internet Explorer or any other browser, Flash Cookies are set by default to be deleted. However, you can make double sure by deleting cookies with the CCleaner. It is recommended that you install the “Slim” version if you do not want any unnecessary tool bar which other versions have a crack to add to your computer.

After downloading CCleaner, click on the Applications tab in the Cleaner section, scroll down to Multimedia and double-click. Then make certain Adobe Flash Player is checked.

  • You can always get a view of cookies downloaded on your computer after surfing the web and here is how: run an analysis; go to Multimedia and then Adobe Flash.
  • The amount of cookies you have will naturally reflect your usage of the internet.
  • To delete the Flash Cookies, click Run Cleaner.

If you do not want to run a manual analysis, you have an option of setting up your CCleaner to run silently by way of a Hotkey and automatically. This can run on Windows 7, XP and Vista.


Flash cookies, against all noble intentions, expose your computer to security risks by tracking your web preferences and invading your private space. This article shows you just how to delete flash cookies. If security matters to you and you want to prevent websites from spying on you, then by all means delete those cookies now.

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