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From: David Kastrup <dak@gnu.org>
To: emacs-devel@gnu.org
Subject: Re: POP3 password in plaintext?
Date: Wed, 01 Oct 2014 07:33:54 +0200	[thread overview]
Message-ID: <87sij8ical.fsf@fencepost.gnu.org> (raw)
In-Reply-To: 87ppecv3pj.fsf@uwakimon.sk.tsukuba.ac.jp

"Stephen J. Turnbull" <stephen@xemacs.org> writes:

> Richard Stallman writes:
>
>  > These points seem to conflict.  First, there is no protection.
>  > Second, there is protection: use TLS for this communication.
>
> Not at all.  If the server provides TLS, there is protection, and both
> modern servers and Emacs (at least Gnus and probably RMail according
> to larsi, but I don't think VM does) are able to use STARTTLS to
> convert an unencrypted channel to an encrypted one, *before* the
> password is sent.

Transparent STARTTLS on demand would seem useless against
man-in-the-middle attacks.  It's just good against eavesdropping on
unintercepted traffic.  And you don't even need to be true
man-in-the-middle: you just need to be faster answering the STARTTLS
negotiation.

-- 
David Kastrup




  reply	other threads:[~2014-10-01  5:33 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-29 20:49 POP3 password in plaintext? Richard Stallman
2014-09-30  1:46 ` Stephen J. Turnbull
2014-09-30 13:31   ` Ted Zlatanov
2014-09-30 19:23   ` Richard Stallman
2014-10-01  4:00     ` Stephen J. Turnbull
2014-10-01  5:33       ` David Kastrup [this message]
2014-10-01 12:54         ` Richard Stallman
2014-10-01 13:15           ` David Kastrup
2014-10-01 17:56         ` David Caldwell
2014-10-01  5:42       ` David Caldwell
2014-10-01 13:22       ` Ted Zlatanov
2014-10-02  1:58         ` Stephen J. Turnbull
2014-10-02 17:04           ` Ted Zlatanov
2014-10-03 10:54             ` Stephen J. Turnbull
2014-10-01 13:48       ` Stefan Monnier
2014-10-01 14:02         ` Lars Magne Ingebrigtsen
2014-10-01 14:37           ` Stefan Monnier
2014-10-01 23:29           ` Ted Zlatanov
2014-09-30 14:17 ` Lars Magne Ingebrigtsen
2014-09-30 19:25   ` Richard Stallman

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