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Date: Sat, 23 May 2015 21:40:19 +1000
Subject: Re: Ah Python, you have spoiled me for all other languages
From: Chris Angelico <rosuav@gmail.com>
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On Sat, May 23, 2015 at 9:34 PM, Tim Chase
<python.list@tim.thechases.com> wrote:
> A self-signed certificate may be of minimal worth the *first* time you
> visit a site, but if you return to the site, that initial
> certificate's signature can be used to confirm that you're talking to
> the same site you talked to previously.  This is particularly
> valuable on a laptop where you make initial contact over a (I
> hesitate to say "more secure") less hostile connection through your
> home ISP.  Then, when you're out at the library, coffee-shop, or some
> hacker convention on their wifi, it's possible to determine whether
> you're securely connecting to the *same* site, or whether an attempt
> is being made to MitM because the cert changed.

You can get the exact same benefit (knowing when the cert changes)
with an externally-signed cert too. How many people actually bother to
check?

ChrisA