Renaud Lifchitz wrote: > Mozilla Thunderbird : Multiple Information Disclosure Vulnerabilities We believe this to be a testing error. The problem of loading remote iframe and css content was fixed prior to the release of Mozilla Thunderbird 1.0 The testcase included in the advisory contains the iframe and css content in-line with the message. That will always be shown as there is no privacy issue with doing so and does not demonstrate the remote loading issue claimed. Once a user has pressed the "Show Images" button--not the best label since it covers all remote content--that state is stored in the mailbox metadata/index file (.msf) and the remote content will then be loaded on future viewings. If the .msf file is not deleted between tests this could give the appearance of the bug described in the advisory. There is a minor residual privacy issue if people whose mail you keep and reread are setting webbugs on you (your boss could find out how many times you read his memo?), but in most cases your privacy is fully blown once you load the remote content the first time.