[OpenID] FW: two-factor authentication with a bookmark

Scott Kveton scott at janrain.com
Tue Feb 6 20:20:38 UTC 2007

Forwarding from the identity gang list (with Ben's permission) ... Very cool
addition to Simon's thoughts on how to fight phishing.  Very cool Ben.

- Scott

------ Forwarded Message
From: Ben Adida <ben at adida.net>
Reply-To: <idworkshop at googlegroups.com>
Date: Tue, 6 Feb 2007 15:02:39 -0500
To: <idworkshop at googlegroups.com>
Conversation: two-factor authentication with a bookmark
Subject: two-factor authentication with a bookmark

Hi all,

This is likely to get massively overshadowed by all the interesting
activity at the RSA conference, but I thought I'd pass it along anyways.

I've been working on BeamAuth, a two-factor authentication with a
bookmark and a password. The goal is to make it harder to phish an
OpenID user (or any other redirect-based single-sign-on system). The
second goal is to do so without a plugin or other client-side
modification. Basically, any single sign-on provider could deploy this
right away.

It's super simple, and it doesn't change the user's login process much:
they get redirected to their login page normally, and then login
requires first a bookmark click, then a password entry.

(forgetting to click your bookmark at a phishing site is not a big deal:
your bookmark token is not revealed and your password is not enough to
log the adversary in.)

I know JanRain recently implemented a bookmark-based anti-phishing
solution proposed by Simon Willinson. This proposal is a bit different:
the bookmark is more than a server locator, it's also a second
authentication token.

I've posted all the details at:


and there's a demo server at:


Looking forward to feedback!


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