The importance of evidence preservation
1. The importance of evidence preservation
In this video, you'll learn the importance of preserving evidence in cybersecurity investigations. You'll also learn about evidence preservation, the types of digital evidence you may encounter, the chain of custody, best practices, and how Google Cloud tools can support you. You can think of yourself a bit like a detective on an investigation. Let's explore these exciting concepts together. Imagine the frustration of finding critical evidence of threat actor activity that is unusable due to improper handling or corruption. Evidence preservation is crucial. It allows cybersecurity professionals to ensure that impacted systems have integrity, and that evidence is available for a follow-on investigation or to analyze how the incident occurred. That's why it's so important to preserve critical evidence in your work as a cybersecurity professional. You might encounter several types of digital evidence in cybersecurity incidents. Some examples include: IP addresses, malware, logs, file hashes, and bad behavior. This type of evidence is also known as an indicator of compromise, or IoC for short. As the term suggests, this type of information indicates or provides clues that a system has been compromised. Each evidence type can provide valuable insights into the incident. As a cybersecurity professional, this digital evidence helps you understand what happened, how it happened, and who might be responsible. It's like piecing together a digital puzzle. Now that you know more about evidence, start to think about what to do with it. How do teams keep their systems from being compromised further while maintaining integrity of the evidence along the way? How do teams work to preserve evidence during an incident investigation lifecycle? As an incident investigation progresses and more people get involved in the process, it’s important that everyone maintains the same level of care and integrity so the team can preserve the evidence. During an incident, it's important that everyone follows the same rules in the chain of custody. The chain of custody refers to the process of documenting and preserving evidence in a way that maintains its integrity and establishes a clear timeline for handling. An accurate chain of custody ensures your evidence is reliable and useful in any current or future investigation. To maintain the chain of custody, you should carefully and intentionally document each step of evidence handling from collection to storage and you should keep all documentation and evidence in a secure location. What should you think about when preserving evidence? There are three important things to consider. You need to capture and store data securely, aim to analyze evidence without altering it, and collaborate to maintain best practices. And the good news is that there are tools that can help. Google Cloud offers several tools and services to support your evidence-preservation efforts. Some of these tools include Cloud Storage, which you can use for secure and resilient data storage; Google Backup and Disaster Recovery, which is helpful for storage and recovery; and Google Workspace, which supports documentation, collaboration, and secure file sharing. These tools can help you maintain the integrity of your digital evidence and streamline your investigation process. As a cybersecurity professional, incident investigations are a key part of the job. Preserving the integrity of evidence for cybersecurity incident investigations is a critical area of focus for you, your team, and your organization. You can use Google Cloud tools to support this process and help you successfully undertake your cybersecurity investigations.2. Let's practice!
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