NODE 850723depenet hack
jdd@aiki.demon.co.uk (Jim Dixon)Sun, 31 Jul 94 06:34:52 PDT
I got a message from anon.penet.fi this morning:
> You have sent a message using the anonymous contact service.
> You have been allocated the code name an118709.
and so forth.
I have never sent any messages using the remailer. So whoever
is fiddling with the remailer is still doing it. Is it a coincidence
that I posted to this list for the first time a few days ago?
--
Jim Dixon
NODE fc586463Re: penet hack
Rick Busdiecker <rfb@lehman.com>Sun, 31 Jul 94 08:53:03 PDT
Date: Sun, 31 Jul 94 14:18:48 GMT
From: Jim Dixon <jdd@aiki.demon.co.uk>
I got a message from anon.penet.fi this morning:
> You have sent a message using the anonymous contact service.
> You have been allocated the code name an118709.
This is a direct result of the following:
Date: Sun, 31 Jul 94 08:32:24 PDT
From: Majordomo@toad.com
Subject: Majordomo results
>>>> who cypherpunks
Members of list 'cypherpunks':
. . .
an111447@anon.penet.fi
So, anything that you send to cypherpunks also goes to this loser, who
then can associate your two identities. Since your an*@anon.penet.fi
address was just allocated, you have not been compromised very badly.
It's possible that this person is simply ignorant rather than
malicious. Subscribing as na111447@anon.penet.fi would have given the
subscription anon.penet.fi-level security without compromising other
users of that service.
The people with the most exposure are those who use anon.penet.fi but
who do not use the X-Anon-Password feature. If you use a password and
send a message to cypherpunks, you should get a message from
anon.penet.fi saying that you forgot to use your password when you
sent the message, but the loser will not get the (un)anonymized
version of your cypherpunks message. Of course, there's marginal
security even with the password feature as the password is transmitted
as plaintext.
Rick
NODE 54c5ae29penet hack
Jacob.Levy@Eng.Sun.COM (Jacob Levy)Sun, 31 Jul 94 09:22:59 PDT
>I have never sent any messages using the remailer. So whoever
>is fiddling with the remailer is still doing it. Is it a coincidence
>that I posted to this list for the first time a few days ago?
No cause for alarm.
The way this works is that the cypherpunks list has members that are
subscribed through anon.penet.fi. If the mailing list sends the message as
you (as opposed to sending it as cypherpunks@toad.com) then it will send a
message from you to the anonymous subscriber. Because of the double-blind
feature of anon.penet.fi this will cause allocation of an ID. Hence if you
send email to this list you're likely to get an ID assigned and receive the
message from anon.penet.fi
--JYL
NODE 1a3c7153Re: penet hack
BCL <cypress@connected.com>Sun, 31 Jul 94 10:59:39 PDT
On Sun, 31 Jul 1994, Jim Dixon wrote:
> I got a message from anon.penet.fi this morning:
>
> > You have sent a message using the anonymous contact service.
> > You have been allocated the code name an118709.
> and so forth.
>
> I have never sent any messages using the remailer. So whoever
> is fiddling with the remailer is still doing it. Is it a coincidence
> that I posted to this list for the first time a few days ago?
Sure sounds like it. I wonder if they are watching the messages that
addresses are being stripped from? I believe this is my first post
here(at least in quite a while). Lets see what happens, shall we?
Brian
--------------------------------------------+--------------------------------
Linux: The choice of a GNU generation | cypress@connected.com
sysop of FreeZone datahaven (206)569-2911 | finger for PGP key
--------------------------------------------+--------------------------------
NODE 1a45aa3aRe: penet hack
Richard Johnson <Richard.Johnson@Colorado.EDU>Sun, 31 Jul 94 11:02:23 PDT
| I got a message from anon.penet.fi this morning:
|
| > You have sent a message using the anonymous contact service.
...
| I have never sent any messages using the remailer. So whoever
| is fiddling with the remailer is still doing it. Is it a coincidence
| that I posted to this list for the first time a few days ago?
No coincidence. For those that haven't figured it out yet, some less
than clueful individual has subscribed a penet pseudonymous id to
cypherpunks. Again. Then again, maybe it _was_ an intentional try
at 'out'ing posters to cypherpunks. The perp will receive each post
twice, once with the 'real' header via their normal subscription, and
once with the 'anonymized' header via their penet subscription.
When a message from a mailing list arrives at penet, addressed to
a 'nym, penet anonymizes it and assigns a new 'nym for the address
in the From: line. To me, this is obviously stupid when mailing
lists are involved, causing automatic 'out'ing of folks who didn't
know they were sending to a pseudonymous account.
Might it be better for penet to fix the problem by more intelligent
parsing on their end (using the Sender: line too?), rather than
forcing the rest of the world to patch around their little security
bug?
Such patches include not attaching signatures and real names to any
mailing list posts, making sure all your accounts have penet ids
protected by passwords, not signing posts using PGP or RIPEM, and
sending to lists only via anonymous remailers. A whole lot of bother
for little gain...
Basically, this penet problem makes Julf's service less than useless
to anyone who wants their pseudonymous address to remain private.