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Defense against SQL injection

Andrew Nash EXPERT RESPONSE FROM: Andrew Nash

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QUESTION POSED ON: 24 April 2006
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?

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EXPERT RESPONSE

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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