A new online platform allows employees to submit custom text for dynamic program output. Testers noticed that user-supplied strings can include commands that resemble code. Which solution reduces the chance of unexpected command execution in these submissions?
Configure perimeter filtering to block connections from unknown locations
Inspect user-submitted entries against a list of restricted patterns before storing or processing them
Use an external key store to rotate credentials at shorter intervals
Add an intrusion detection tool that alerts on all inbound requests
Verifying fields and filtering out harmful characters ensures the platform processes trusted input. This measure helps identify or remove suspicious patterns prior to execution. Other measures might limit system access or encrypt data but do not directly mitigate code-like inputs when they are submitted.
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What are restricted patterns, and how are they used to secure applications?
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What types of harmful characters or inputs should developers look for in submissions?
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How does input validation differ from other security measures like intrusion detection?