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Forensics data preservation: Unlocking the secrets of the digital age

In our digital world, trust in data is everything. When something goes wrong, whether it’s a cyber incident or a legal dispute, preserving that data is similar to hitting the pause button on time. This allows us to investigate, solve problems, and get clarity. Let’s dive into why keeping data intact is so important and how it helps us navigate these challenges with confidence.

Why Is Evidence Preservation Crucial? Data preservation is all about keeping things genuine. It ensures that data stays just as it was, which is vital for figuring out what happened and proving it. As NIST puts it, “The objective is to maintain the integrity of the evidence, ensuring that it is preserved in a condition that allows it to be reliably used in analysis and, potentially, in a court of law” (NIST Special Publication 800-86).
In other words, it keeps the story straight!

In legal matters, evidence must be kept secure and unchanged. “Any break in the chain of custody can lead to questions about the integrity of the evidence and may result in its exclusion from legal proceedings” (Eoghan Casey, Digital Evidence and Computer Crime). If evidence is tampered with, it could mean big trouble, including misleading conclusions and decision errors.

Finding the Digital Breadcrumbs

In cybersecurity, evidence preservation is like following a trail of breadcrumbs back to where things went wrong. It helps investigators pinpoint how an attacker got in, what vulnerabilities were exploited, and what damage was done. “Evidence preservation is fundamental for conducting thorough root-cause analysis, enabling investigators to accurately trace back the steps of an attacker and understand the full scope of the incident” (Nathan Clarke, “Digital Forensics Processing and Procedures). Without solid evidence, it’s easy to get lost and leave the organization exposed to threats.

Evidence Preservation for Legal and Technical Success

Keeping evidence preserved ensures everyone (lawyers, cybersecurity experts, IT teams) are on the same page. According to the ACPO Good Practice Guide for Digital Evidence, “Consistency in handling digital evidence ensures that all stakeholders are working from the same set of data, ensuring accurate and coordinated findings.”

Transparency Builds Trust

Clear and well-documented evidence handling builds trust and credibility, whether in court or within an organization. “Transparency in handling and documenting evidence enhances the credibility of the findings and supports a robust investigation process” (NIST SP 800-86).

The Risks of Poor Evidence Preservation

If evidence isn’t preserved correctly, it can lead to significant issues for organizations. Improperly handled evidence may not hold up in court, resulting in legal complications. Without solid evidence, understanding and mitigating a cyberattack can become an elusive task, akin to chasing ghosts. Additionally, the absence of clear evidence can create challenges during audits and re-insurance processes, causing insurance issues. Failure to adhere to proper preservation practices can also lead to non-compliance with data regulations, further compounding risks. Moreover, mishandling evidence can erode trust among customers and partners, ultimately damaging the organization’s reputation and reliability.

 
About the author: Jean-Simon Gervais enjoyed a successful career in the Canadian Forces after which he founded the Digital Forensics and Incident Management firm Fullblown Security Consulting, fullblownsecurity.com