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Defense against SQL injection

Web services security expert Andrew Nash discusses how to guard against SQL injection.

Now that I'm building services using data and components from outside my unit, how do I guard against SQL injection on components I can't control?

SQL injection is one of the many content based attacks. The only way to deal with this successfully is to use very high performance content filtering and attack signature recognition. This processing is very compute expensive however, so it is best offloaded from individual application platforms and performed as a network service provided to web service applications.

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