Exam CAS-004 topic 1 question 54 discussion

Apparently the answer is C, I hate Comptia I pulled this from the study guide Steganography When a message is buried within another item, such as a photograph or document, it is known as steganography. It is critical in steganography that only those who are anticipating the message are aware that it exists. One approach to steganography is to use a concealing cipher. Digital watermarking is another kind of steganography. Digital watermarking is the process of embedding a logo or brand in papers, images, or other things. The watermarks serve as a deterrent to unlawful use of the content. Changing the least significant bit for each pixel in an image is the most popular method. Pixels are modified in this example in such a modest amount that the human eye cannot notice them.

I'll go with B. Filesystem metadata is data that is associated with a file and stored within the filesystem itself. This can include information such as the file's name, size, creation date, and other details. By adding identifying metadata to the audio files, the business can make it easier to track and identify copies of the files that may have been stolen or illicitly shared. This can be an effective and low-cost approach to theft detection, as it does not require any specialized tools or software. Implementing steganography would not be an effective approach to theft detection, as it involves hiding information within other data and is typically used for covert communication rather than theft detection. Purchasing and installing a DRM (Digital Rights Management) suite would not be a low-cost approach to theft detection, as DRM suites can be expensive and may not be necessary for the business's needs.

Ans is B. The technique that will MOST likely meet the small business's needs for low-cost theft detection for its audio recordings is B. Adding identifying filesystem metadata to the digital audio files. Adding identifying metadata allows the business to include information such as the creator, copyright information, or unique identifiers directly within the audio files. This method is relatively inexpensive and straightforward, providing a way to trace and prove ownership if the recordings are stolen or used without permission.

I was between B, C, or D. By process of elimination, B, doesn't make much sense since all files contain metadata. DRM is too high of a cost, D is out. and C, Implementing steganography (by definition Steganography is the practice of concealing information within another message or physical object to avoid detection. Steganography can hide virtually any type of digital content, including text, image, video, or audio content. That hidden data is then extracted at its destination.)

Ans is B. The technique that will MOST likely meet the small business's needs for low-cost theft detection for its audio recordings is B. Adding identifying filesystem metadata to the digital audio files. Adding identifying metadata allows the business to include information such as the creator, copyright information, or unique identifiers directly within the audio files. This method is relatively inexpensive and straightforward, providing a way to trace and prove ownership if the recordings are stolen or used without permission.

Voted for C. Rationalization: Steganography allows the business to embed identifying information or watermarks within the audio files in a way that is hidden from regular users but can be used to trace stolen copies. This is a cost-effective method compared to expensive DRM solutions or deep-packet inspection and can be more robust than simple filesystem metadata, which is easy to remove. Let's talk numbers. Steganography vs. DRM Steganography Initial Cost: Free to $500 (tools) Maintenance: Minimal Implementation: Simple to moderate (easy tools) Effectiveness: Good for tracing theft not prevention DRM Initial Cost: $5,000 - $50,000+ (commercial suites) Maintenance: High (ongoing licenses, updates, tech support) Implementation: High complexity (requires expertise) Effectiveness: High for access control and anti-piracy

Implementing steganography (Option C) involves embedding hidden information within the audio files themselves. This can include unique identifiers or watermarks that are difficult to remove without damaging the audio quality. Steganography can help track the distribution of files and identify unauthorized copies.

DRM suite is the only theft detection option

A and C are out instantly. Key word is "low-cost".

The most suitable technique for a small business looking for a low-cost approach to theft detection for the audio recordings it produces and sells would be B. Adding identifying filesystem metadata to the digital audio files. This approach involves adding unique, identifying information to the metadata of each audio file. If these files are found elsewhere (for example, on a file-sharing site), the metadata can be checked. If it matches, it's a strong indication that the file may have been stolen.

B. Adding identifying filesystem metadata to the digital audio files Theft detection

Implementing steganography (Option C) involves hiding information within other non-secret data, such as embedding data within the audio file itself. While steganography can be a method to conceal information, it may not be the most practical or effective solution for basic theft detection in this context. Steganography might help hide information, but it doesn't necessarily provide a robust and easily traceable way to identify and track stolen audio files. Additionally, skilled individuals may find ways to detect and remove the hidden information.

B. Adding identifying filesystem metadata to the digital audio files I have to go with B since the question ask for low cost approach. Stenography is not a low cost approach.

Anyone thinking this is C should give up on a carrier in cyber security.

Source: Verifying each answer against Chat GPT, my experience, other test banks, a written book, and weighing in the discussion from all users to create a 100% accurate guide for myself before I take the exam. (It isn't easy because of the time needed, but it is doing my diligence)

Adding identifying filesystem metadata to the digital audio files would be the most likely technique to meet the business's needs for low-cost theft detection. This approach involves adding a unique identifier or watermark to the digital audio file's metadata, which can help track the source of the file if it is distributed or used without permission. This technique is relatively simple and cost-effective, and does not require any specialized software or equipment. Deep-packet inspection, steganography, and DRM suites are typically more complex and expensive solutions that may not be necessary for a small business with limited resources.

Out of the given options, adding identifying filesystem metadata to the digital audio files would be the most likely technique to meet the business's needs for low-cost theft detection. By adding unique metadata to each audio file, the business could track the source of any unauthorized copies of their files. This technique is relatively simple and low-cost compared to the other options, such as implementing steganography or purchasing a DRM suite.