Cybersecurity Investigation: Scenario-Based Threat Analysis — PickAClass
⏱ 3h 📚 30 lessons 🎧 Audio version

Cybersecurity Investigation: Scenario-Based Threat Analysis

Learn foundational digital forensics, OSINT, and threat investigation techniques through a hands-on, scenario-driven written guide.

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About this course

In the digital world, security analysts must piece together scattered clues to resolve critical security incidents and track down threats under pressure. This text-based course guides you through a simulated investigation scenario, teaching you how to analyze digital evidence, decode hidden messages, and apply modern cybersecurity investigation techniques. You will learn to: - Understand core cybersecurity terminology and modern threat landscape fundamentals - Learn how to conduct basic OSINT (Open Source Intelligence) investigations to gather digital clues - Analyze email headers and file metadata to trace unauthorized communications - Decode common encoding formats like Base64, Hex, and binary used in cyber incidents - Apply structured threat analysis methodologies to solve simulated security challenges - Practice identifying security vulnerabilities and documenting your investigation findings Starting with fundamental security concepts and investigation principles, you will progress through a step-by-step written scenario that challenges you to solve a digital mystery. This course is perfect for beginners looking for a practical, engaging introduction to digital forensics and security analysis, with no prior technical experience required. Begin your journey into digital forensics and master the art of security investigation today.

Course contents

6 modules · 30 lessons · 3h

1 The Investigator's Foundation
Introduce the role of a security analyst and the core concepts of the threat landscape.
5 lessons · 30 min
  1. Welcome to the Agency
    Introduction to the course structure and your role as a Junior Security Analyst.
    5 min
  2. The Language of Cyber
    Defining core terminology like malware, phishing, and SOC operations.
    6 min
  3. Today's Threat Landscape
    Understanding modern threats like ransomware and social engineering.
    6 min
  4. Digital Forensics 101
    The principles of preserving evidence and maintaining a chain of custody.
    6 min
  5. Case Briefing: The Incident
    The scenario begins: An unauthorized data leak has been detected at a tech firm.
    7 min
2 OSINT: Gathering Digital Clues
Learn how to use open-source intelligence to track suspects and gather information.
5 lessons · 30 min
  1. The Power of OSINT
    Defining Open Source Intelligence and its role in investigations.
    5 min
  2. Advanced Search Techniques
    Using Google Dorks and specialized search operators to find hidden info.
    6 min
  3. Social Media Intelligence
    How to ethically gather clues from public social media profiles.
    6 min
  4. Domain and IP Research
    Using WHOIS and DNS records to investigate suspicious websites.
    7 min
  5. Scenario: Tracking the Suspect
    Apply OSINT to identify the person behind a mysterious username found in logs.
    6 min
3 Tracing Communications & Metadata
Analyze emails and files to find hidden origins and paths of communication.
5 lessons · 30 min
  1. Reading Email Headers
    Understanding the technical 'envelope' of an email to find its true source.
    7 min
  2. Analyzing Hop Paths
    Tracing how an email traveled through different servers.
    6 min
  3. Spotting Unauthorized Comms
    Identifying red flags in internal vs. external communication patterns.
    6 min
  4. Hidden Secrets in Metadata
    Extracting 'data about data' from PDF and Image files to find authors.
    6 min
  5. Scenario: The Leaked File
    Analyze a suspicious attachment to find where it originated.
    5 min
4 Decoding the Evidence
Master the ability to decode common formats used to hide malicious data.
5 lessons · 30 min
  1. Encoding vs. Encryption
    Understanding why attackers use encoding to bypass security filters.
    5 min
  2. Cracking Base64
    Learning to recognize and decode Base64 strings manually and with tools.
    6 min
  3. Hexadecimal Decoded
    How to read and translate Hex code found in digital evidence.
    6 min
  4. The Binary Basics
    Understanding how binary data represents information in a cyber context.
    6 min
  5. Scenario: The Encoded Note
    Decode a hidden message found on the suspect's computer.
    7 min
5 Threat Analysis Methodologies
Apply structured thinking to connect clues and identify vulnerabilities.
5 lessons · 30 min
  1. Structured Analysis Models
    Introduction to the Diamond Model and Cyber Kill Chain for investigators.
    7 min
  2. Identifying Vulnerabilities
    Determining which security gaps allowed the incident to occur.
    6 min
  3. Timeline Analysis
    Reconstructing the sequence of events during a security breach.
    6 min
  4. Hypothesis Building
    Creating and testing theories based on the gathered evidence.
    6 min
  5. Scenario: Connecting the Dots
    Synthesize all clues to identify the 'who, what, and how' of the leak.
    5 min
6 Reporting & Investigation Closure
Finalize the investigation by documenting findings and suggesting improvements.
5 lessons · 30 min
  1. The Art of Documentation
    Why clear note-taking is the most important skill for an analyst.
    5 min
  2. Writing the Incident Report
    Structuring a professional report for management and technical teams.
    7 min
  3. Evidence Presentation
    How to present technical findings to a non-technical audience.
    6 min
  4. Scenario: Closing the Case
    Final review of the simulated investigation and the suspect's capture.
    6 min
  5. Next Steps in Your Career
    Resources for further learning in digital forensics and security.
    6 min
Final project

The 'Project X' Final Investigation Report

Using the clues gathered throughout the course (OSINT results, decoded messages, and email analysis), you will compile a comprehensive Incident Report.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 14-day refund
    No questions asked
  • ⚡ Short & focused
    3h of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Cybersecurity Investigation: Scenario-Based Threat Analysis
Skills demonstrated
✓
Behavioral pattern analysis
Foundational
1.2 hrs
✓
Decision-architecture frameworks
Proficient
1.4 hrs
✓
A/B test design
Proficient
1.7 hrs
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Advanced
1.9 hrs
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PickAClass — Name Surname
Cybersecurity Investigation: Scenario-Based Threat Analysis
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Just a phone or computer with internet. No installs, no special hardware.

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Yes — full refund within 14 days, no questions asked.

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Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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