Security Hardening a calendar app

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I am a member of a development team of an open source PHP
Scheduling/Calendar app hosted on sourceForge
( ). We currently have
posted a release candidate for version 2 and we are inviting folks to
download and test the app and see if they can expose any security
issues that have slipped under the radar so far. The app runs of php 4
and MySQL 3.23 or higher as well as MS Access database. Our main
concern is SQL injection so we are keen to know if anyone can find an
exploit before we release the final version.


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