GCFR practice question 15 of 15

What 1$ a drawback of analyzing a snapshot outside of AWS?

Full set: 82 questions
Answer options
A: Incomplete data
B: Long download time Correct answer
C: Incompatible image format
D: Low latency
Correct Answer:
B. Long download time
Explanation

The primary drawback of analyzing an AWS snapshot outside of the AWS environment is the significant time required for data transfer. EBS snapshots can be extremely large, often containing terabytes of data. Downloading this volume of data to an on-premises forensic workstation over a standard internet connection can take hours or even days, severely delaying the incident response process. This challenge, often referred to as "data gravity," makes in-cloud analysis a more efficient alternative by bringing the analysis tools to the data, rather than moving the data to the tools.

Why Incorrect

A. Incomplete data: A snapshot is a complete, point-in-time copy of an EBS volume. Moving the snapshot does not inherently cause the data to become incomplete.
C. Incompatible image format: While AWS snapshots have a specific format, tools and procedures exist to convert them or mount them for analysis, making them compatible with standard forensic suites.
D. Low latency: Low latency is an advantage, meaning fast response times. Transferring large amounts of data out of the cloud would introduce high latency, which is a drawback. ---

References

1. AWS Well-Architected Framework, Security Pillar (July 2023). On page 69, in the section "How do you investigate a security event?", the framework recommends creating a dedicated and isolated Virtual Private Cloud (VPC) for forensic analysis. This approach of keeping evidence within AWS avoids the "time-consuming and costly" process of exporting large data volumes like snapshots.

2. Martini, B., & Choo, K. K. R. (2016). Cloud forensics: A meta-study of challenges, approaches, and open problems. Journal of Network and Computer Applications, 68, 13-37. In Section 3.1.1, "Volume," the authors identify the massive volume of data as a primary challenge in cloud forensics. They state, "The sheer volume of data that needs to be acquired, transferred, and processed can be a significant challenge... transferring terabytes of data from a CSP [Cloud Service Provider] to a forensic laboratory is often infeasible." (p. 16). https://doi.org/10.1016/j.jnca.2016.01.021

3. Dykstra, J., & Sherman, A. T. (2013). Design and implementation of FROST: a forensic recovery of scrambled telephones toolkit. Journal of Digital Forensics, Security and Law, 8(2). While discussing mobile forensics, the principles apply broadly to large data sets. The paper highlights acquisition challenges related to data transfer time, noting that "the time required for the acquisition can be a significant factor," a problem that is magnified with cloud-scale data volumes. (p. 46). https://doi.org/10.15394/jdfsl.2013.1151

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