Geekspeak I don't understand

Jon Ribbens jon+ukcrypto at
Wed May 13 23:17:47 BST 2015

On Wed, May 13, 2015 at 10:27:10PM +0100, Roland Perry wrote:
> In article <20150513123103.GA25424 at>, Jon Ribbens
> <jon+ukcrypto at> writes
> >Is it a corporate computer or similar that might have a root
> >certificate installed by the IT department?
> No, it's my five year old laptop where only I am the administrator.
> Not sure if it matters but about three months ago I wiped the
> Win7-upgraded-to-Win8 installation and did in effect a "factory reset" back
> to Vista.
> I use Facebook multiple time most days (for years), and have never before
> seen any error message like this.

It does seem very peculiar. Also, as far as I can see, Facebook does
not use certificate pinning. Something strange happened. It could be
a bug in Firefox I suppose.

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