April 2026
Intermediate
1009 pages
34h 15m
English
Content preview from PHP and MySQL
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15.6 Security Concerns
Despite all the advantages that sessions offer, the disadvantages should not be completely ignored.
15.6.1 No Sessions without Cookies!
Especially with cookieless sessions, the discrepancy between convenience and security is huge. It used to be claimed that web applications wouldn't work without cookieless sessions, but nowadays it's more likely that it won't work with cookieless sessions.
The reason for this is very simple: the key to all information, the session ID, is in this case in the plain text of the URL. Imagine the following situation: A webmail provider uses cookieless sessions. You send an email to a customer of the webmail provider with a link to your website, or more precisely, with a link to a PHP ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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