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New SSL policy in Firefox hurting tens of thousands of sites

“SSL” (Secure Sockets Layer) is a standard for establishing an encrypted link between a web server and a browser to ensure that all data passed between the web server and the browser remains private.

The “geeks at Pingdom” describe a problem with the way Firefox version 3 handles “SSL certificates” (which the casual user does not even see under normal conditions):

If you visit a website with either an expired or a self-signed SSL certificate, Firefox 3 will not show that page at all. Instead it will display an error message, similar to any other browser error (for example a “page not found” 404 message).

…[T]his is not something that only affects smaller websites. For example, the SSL certificate for the official US Army website [https://www.us.army.mil/] is declared invalid by Firefox 3.

See also:
What is SSL? (ssl.com)
SSL (Webopedia)
SSL (Wikipedia)

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  1. Ben says:

    I think there’s another side to this issue, that self signed SSL certificates can be a privacy threat to the non-savvy user. A site can pretend to be a bank, self sign a certificate and phish. How many people do you know who follow the trust path back to its source?

    There’s an excellent slashdot thread on it:


    I definitely think you need to outline the *other* side of this issue for your lest savvy users.

  2. J says:

    We have a “weather kiosk” at our local airport that pilots use to access various sites, government and other, prior to flight. This kiosk runs LiveKiosk, a Linux-based free kiosk originally developed to help Katrina victims with web access. It offers a locked-down version of Firefox.

    In this situation, a self-signed certificate makes the sites inaccessible. For example, we can’t use the kiosk to access FAA’s Pilotweb site to check NOTAMS prior to flight.

    Self-signed certificates should only be used for testing or internal use, not for public sites.

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