When response teams collect data for analysis during an incident, it is essential that they ensure the data has not been tampered with during the process. Performing a cryptographic hash function on files both before acquisition and after ensures that the data remains identical and unaltered. If the hash values match, this confirms data integrity has been maintained. It's a foundational concept in digital forensics and incident response.
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What is a cryptographic hash function?
Why is data integrity important in incident response?
What is the difference between acquisition and analysis in digital forensics?