A security analyst is reviewing logs and discovers the following: 149.34.228.10 - [28/Jan/2023:16:32:45 -0300] "GET / HTTP/1.0" User-Agent: ${/bin/sh/ id} 200 397. Which of the following should be used to best mitigate this type of attack?

Secure cookies are used to enhance the security of session management by ensuring that cookies are only transmitted over secure HTTPS connections and are inaccessible to JavaScript. While secure cookies help protect session data from theft, they do not address the underlying issue of input validation, which is critical for mitigating command injection attacks like the one observed in the logs.

Static code analysis is a technique for reviewing code to identify potential vulnerabilities before deployment. Although it can help discover security flaws within the codebase, it does not provide real-time protection against exploitation of existing vulnerabilities, such as the command injection seen in the User-Agent field. Without implementing input sanitization, even a well-analyzed codebase may still be susceptible to such attacks.

Sandboxing involves executing code in a restricted environment to limit its access to system resources. While this can contain the damage caused by malicious code, it does not prevent the initial injection of harmful input. Therefore, introducing input sanitization is a more effective proactive measure to stop the exploitation before it can occur.