On a compromised client device, several digital images appear unusually large for their apparent content. You suspect data has been embedded in these files. What would be an effective way to access the hidden data?
Collecting file checksums to look for inconsistencies
Reviewing DNS queries for suspicious domain lookups
Investigating the audit logs for numerous permission changes
Examining the file's structure with a specialized utility for concealed data
Specialized tools analyze patterns within file structures to extract embedded messages. Inspecting network logs or DNS traffic alone will not reveal hidden data in the image itself. Comparing checksums might detect file alterations, but it will not uncover the concealed information. Analyzing the file structure with steganography-focused utilities remains the most direct way to retrieve the data.
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What is steganography?
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What types of tools can analyze file structures for hidden data?
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How does analyzing checksums differ from detecting hidden data?