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A security engineer performed an assessment on a recently deployed web application. The engineer was able to exfiltrate a company report by visiting the following URL: www.intranet.abc.com/get-files.jsp?file=report.pdf Which of the following mitigation techniques would be BEST for the security engineer to recommend?
Correct Answer: A
Input validation is the process of checking user input to ensure that it is valid and safe. In this case, the security engineer should recommend that the web application validate the file parameter to ensure that it is a valid "file" path. This will prevent attackers from being able to exfiltrate arbitrary files from the web server.