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Date: Thu, 6 May 2010 13:46:08 -0400
From: T Biehn <>
To: Elazar Broad <>
Subject: Re: JavaScript exploits via source code disclosure

A proxy or 'web-service firewall' prior to the 'protected' web service is
the correct answer.

Obfuscating the client code be it JavaScript, Interpreted (Java, CLR, etc)
or Native ignores the notion that the client controls hardware, OS, the
executing process and the network.

Signals can be intercepted at any layer.

Any other assertion is ridiculous and a waste of time and effort.


On Thu, May 6, 2010 at 1:08 PM, Elazar Broad <> wrote:

> Hash: SHA1
> Unless you wrap your service methods with some form of an
> authentication, your webservice's are just as public as any other
> "world" accessible part of your site. Are the pages calling these
> services behind any sort of authentication?
> On Thu, 06 May 2010 01:44:07 -0400 Ed Carp <> wrote:
> >We've got a lot of JQuery code that calls back-end web services,
> >and
> >we're worried about exposing the web services to the outside world
> >-
> >anyone can "view source" and see exactly how we're calling our web
> >services.
> >
> >Are there any suggestions or guidelines regarding protecting one's
> >source from such disclosure?  Thanks in advance!
> >
> >_______________________________________________
> >Full-Disclosure - We believe in it.
> >Charter:
> >Hosted and sponsored by Secunia -
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