I made a first version of a comment system which can be viewed here: http://t-s.bugs3.com . Could I have some suggestions too inprove it and to know if theres anyway to hack it? If people like it i will make a site where you can download it. By the way i have just begun php and this is the first actual working project that i have made.
Since you want us to look and see what security vulnerabilities might be present, can you post your code?
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' where(DELETE FROM comment WHERE 1=1) =1;--