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Sins of improper website operation

People who run websites are generally clueless about securing their websites. What follows is a short list of "seven sins" (I know...a cliché) that are committed by those who operate a website that use a dynamic backend scripting language (PHP, Perl, etc.): 1) Installing third-party components without first reviewing them for how well-written they are, if they have had major security vulnerabilities and/or exploits in the past 12 months, how well defended against automated scripts they are, and how well each component defends itself from known and unknown exploits. If you don't know how to do this, then employ the services of a security expert. 2) Not upgrading components the same day an upgrade becomes publicly available. PHP, MySQL, third-party components, etc. All major releases typically have fixes for security vulnerabilities. And most releases likely already have exploits for those vulnerabilities floating around in the wild. Security firms track both the vulnerabil...