I know I am asking a dumb question here, but pardon me, I am learning.
I found two questions viz, How do I access cookies within Flash? and How to Make a button send an email using AS3 automatically. My question is, If I create a flash file with the above functionalities and upload that flash to some web applications like facebook or twitter, ideally I would be able to grab the cookies of other users in mailbox. What security feature is implemented in such cases to prevent this?