Question: If you were trying to prevent a SQL injection attack in a Web application, which of these would not be an effective way to check

If you were trying to prevent a SQL injection attack in a Web application, which of these would not be an effective way to check input? White list (i.e., only allow from trusted source and with limited syntax) Black list (i.e., block known untrusted sources and bad syntax) Rely on client-side JavaScript to validate input before posting. Prevent substituting characters in a URL with their HTTP-escaped equivalents
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