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where does firefox store passwords and username when we opt for remember password. Is it always cookies or some other encrypted file.Also where is the data filled by auto complete functionality of browsers come from. It doesn't seem to come from cookies as same auto-complete info sometimes appears in fields of websites other than those it was previously filled in. Is it possible to retrieve data from browser itself(sensitive as well as the general one)?

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you can see saved passwords (depending on OS) in the options/preferences under security - saved passwords. Saved passwords are stored in a hidden folder C:\Users\User\AppData\Roaming\Mozilla\Firefox\Profiles\(X#X#X#X#X#X#X).default where X#X#X#X#X# is unique. They are the key3.db file and the signings.sqlite file

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well that sounds depressing what about windows XP SP3? Can you tell me a way to turn it off? – Vaibhav Singla Feb 16 '12 at 14:03
Put a master password on or don't save passwords – Raystafarian Feb 16 '12 at 14:09
@Raystafarian AFAIR the master password only protects the stored passwords, not the saved general form data. – Robert Feb 16 '12 at 15:36
@Robert that is correct. My answer only addressed 1 part of the question, which doesn't make it much of an answer, but it's more than a comment. – Raystafarian Feb 16 '12 at 15:38

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