WebApp Sec mailing list archives

Re: Is logoff feature necessary


From: "Michael Silk" <michaelslists () gmail com>
Date: Tue, 2 May 2006 21:22:41 +1000

On 2 May 2006 07:41:02 -0000, test.future () gmail com
<test.future () gmail com> wrote:
We have a web applicaiton which do not have logoff button. The developer claims that it
is unnecessary, since the session can be terminated by closing the browser.
Is it correct?

no. browsers may delete 'session' cookies, but if you have your own
cookie, it won't be deleted, and of course the cookie may be set for a
different time period (maybe 20 minutes) thus preventing the browser
from deleting it.

also don't forget that just because the cookie is deleted doesn't mean
the session has ended. if the cookie was intercepted it can still be
used.


Thanks.

you're welcome.

-- Michael

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