WHAT!!!!  You store a userId in a cookie and trust it????  Are you
mad???  Numbers are as inherently secure as UUIDs - they're both
simply identifiers.  Authentication and authorization are where
security happens.  If an application is susceptible to spin attacks
like that, I suppose that a UUID might assist to some degree, but much
better to just prevent the spin attack.

cheers,
barneyb

On Tue, Oct 28, 2008 at 12:30 PM, Phillip M. Vector
<[EMAIL PROTECTED]> wrote:
> Oh.. I have that as well. But take for example the UserID that I store
> as a cookie to someone else based on the UserID field.
>
> It's easy to change a cookie to a 1 and hope to get admin access.
>
> It's harder to figure out someone elses ID. :)
>
> and yeah, I can set it to the IP and so on, but honestly, using a UUID
> is allot more secure then auto increase.
>
> Matt Quackenbush wrote:
>> On Tue, Oct 28, 2008 at 2:13 PM, Phillip M. Vector wrote:
>>
>>> The only thing I've noticed in using that is that you can guess the next
>>> number.
>>>
>>> If you have a URL string of id set to 7, I've always tried manually
>>> typing in 6 and seeing what happens. Sometimes, 5. :)
>>>
>>>
>> That's what permission checking in your application is for.  :-)
>>
>>
>>
>
> 

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