Digital forensics is the process of collecting and analyzing evidence from computers and networks after an incident. This is Module 13 of The Complete Blue Team Course.
Order of Volatility
Evidence decays at different rates. Memory is gone on reboot, network connections change by the second, while data on disk lasts far longer. Collect the most volatile evidence first. A typical order is: memory, network state, running processes, then disk and logs.
Memory Forensics Basics
Tools like Volatility let you extract running processes, network connections, and injected code from a memory image. This often reveals malware that never touched disk and would be invisible to a purely file-based investigation.
Chain of Custody and Why It Matters
Every piece of evidence needs a documented trail: who collected it, when, how, and who has handled it since. This is not bureaucracy. It is what makes evidence usable in a legal proceeding or a serious post-incident review.
Good Forensic Habits
- Work on copies, not originals.
- Record hashes of evidence when collected.
- Keep detailed notes with timestamps.
- Do not change the system more than necessary.
Key Takeaways
- Collect volatile evidence first.
- Memory analysis finds what disk analysis misses.
- Documentation protects the value of your evidence.
Frequently Asked Questions
What is Volatility?
An open source framework for analyzing memory dumps.
Do SOC analysts need forensics skills?
Basic knowledge helps a lot. Deep forensics is usually a specialization.
Get the Full Blue Team Course
This is a free preview of Module 13. The complete 22-module course, from SOC fundamentals and SIEM to threat hunting, incident response, detection engineering, and career paths, is available as a one-time $1 download.