Flash “cookies” can be up to 100 kb. They never expire, will never be deleted automatically, and by default they don’t have to ask your permission to save all this data. There’s no easy way to delete them yourself, your browsers are not aware that they exist, so clearing Cookies and History doesn’t help. Adobe has hidden the settings in a Flash app deep in their website. Got your attention, so far?
Also, did you know you can set privacy settings for access to your camera and/or microphone on your computer? The Maintain Blog alerted me to check out Adobe’s Website Storage Panel. The page that comes up has the information from your computer already listed. You can view and make changes in Storage, Security Settings, Global Notifications Settings, and more. Reassuringly, it says, “Adobe has no access to this list or to any information that the websites may have stored on your computer. (Double click on this illustration to enlarge.)