GIAC
GCIH · Question #419
GCIH Question #419: Real Exam Question with Answer & Explanation
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Question
What is the best approach to successfully filter out potentially harmful characters from user input?
Options
- APerform input validation at the client program as the input is being provided.
- BInclude stringent content filtering at each firewall and proxy server.
- CDefine and filter out what is unacceptable, then allow everything else.
- DDefine what is acceptable and filter out everything else.
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