Certified Incident Handler (CIH) Practice Ecam

Which practice helps incident responders manage software and data-integrity failures effectively?

1. Deserialization of trusted data must cross a trust boundary

2. Allow unchecked serialization of all data

3. Use arbitrary code execution techniques

4. Implement logging of serialization processes

The correct answer is: Deserialization of trusted data must cross a trust boundary

The practice of ensuring that deserialization of trusted data crosses a trust boundary is vital for incident responders managing software and data-integrity failures. This approach emphasizes security by ensuring that any data that is deserialized (converted from a format such as JSON or XML back into an object or data structure) is validated and originates from a trustworthy source before it is processed. When deserialization occurs across a trust boundary—meaning data is taken from a less trusted environment and is moved to a more trusted one—it is essential to validate the integrity and authenticity of that data. This helps prevent vulnerabilities such as injection attacks, where malicious data could compromise a system upon deserialization. By enforcing these boundaries, organizations can better protect their systems and maintain data integrity against potential threats. The other choices do not contribute effectively to managing software and data-integrity failures. Allowing unchecked serialization of all data poses significant risks, as it opens the door to security vulnerabilities by processing potentially malicious input without proper oversight. Using arbitrary code execution techniques can lead to severe exploits, enabling attackers to run unauthorized operations within the system. Implementing logging of serialization processes, while useful for auditing and troubleshooting, does not directly prevent integrity failures or mitigate the risks associated with deserialization. Therefore, the approach that emphasizes a