Flash cookie


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Flash cookie

A data file that is stored in the user's computer by visiting a website that runs a Flash application. Officially called a "local shared object" (LSO), it functions like a regular browser cookie to personalize the user's experience, except that a Flash cookie can hold up to 100KB rather than only 4KB (see cookie). Clearing cookies in the Web browser does not clear Flash cookies. They must be cleared via Adobe Flash Player settings. See Evercookie.
References in periodicals archive ?
17, 2011) ("When a computer user deletes a browser cookie, the flash cookie 'respawns' the browser cookie without notice to or consent of the user.
Examples of such cookies include Flash cookies in which user tracking data is stored in a little known Adobe Flash plug-in, and cache cookies in which the data is stored in the entity tags (eTags) used by browsers as a bandwidth saving mechanism.
Since flash cookies are not controlled by the browser, other browsers on the same machine can access the same flash cookies.
Through the use of flash cookies and other technologies, businesses are tracking the online behavior of consumers collecting information about the sites we visit and the things we buy and using that information to target their advertising.