That's funny because passing clear ids in url is quite common in
classic webs written in PHP. Practically all PHP frameworks/CMS
(including the big ones like Joomla or MODx) do that so I never
thought of it as a possible vulnerability. Or is there something more
I should worry about in this particular situation (Python,
AppEngine...)?

On 27 led, 19:34, Jeff Schwartz <[email protected]> wrote:
> IMHO passing clear ids as text in urls is not a good idea because anything a
> hacker can gleam about data is opening up a can of worms that they could use
> to try to exploit your site and even corrupt your data. I'd look to encrypt
> the id or at least apply a hash such as base64 at a a minimum to obfuscate
> the actual id. While base64 wont deter a committed hacker it will deter many
> malcontents who will move on to easier pickings. Best if you can, generate
> an encrypted id on the server and pass that back via the url from the
> client.
>
>
>
> On Thu, Jan 27, 2011 at 1:06 PM, tobik <[email protected]> wrote:
> > Great, thanks.
>
> > On 27 led, 16:06, Geoffrey Spear <[email protected]> wrote:
> > > On Thursday, January 27, 2011 2:52:48 AM UTC-5, tobik wrote:
>
> > > > Thank you! That's what I wanted to know.
>
> > > > So basically passing Keys in urls is not a good idea, but using pure
> > > > IDs and Model.get_by_id() should be secure enough. Or am I wrong? I
> > > > tried to get access to data across namespaces but it ended up with
> > > > request error. So it worked as expected.
>
> > > Yes; IDs are only unique within a namespace, entity group, and kind, so
> > > passing an ID from one namespace to an instance using a different
> > namespace
> > > will either get you a different entity from the calling instance's
> > namespace
> > > or nothing, never the entity in the original namespace.
>
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> --
> *Jeff Schwartz*

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