Cybersecurity Incident Triage: The First Hour
Evaluate a potential incident, document the details, determine priority, take action within your limitations, and communicate effectively.
What you'll learn
- Categorize what you observe as an event, alert, suspected incident, or confirmed incident based on the provided evidence
- Identify six standard incident patterns along with initial questions, urgency markers, and actions to steer clear of for each
- Document triage facts in a way that distinguishes observations, assumptions, and unknowns clearly
- Analyze sign-in, endpoint, and application logs, understanding what information each field can and cannot verify
- Create a timeline on a single clock and an initial scope that differentiates between observed, possible, and unknown elements
- Establish a priority that can be justified, taking into account business impact, urgency, and exposure, while assessing confidence separately
- Determine permissible next steps: gather more data, escalate immediately, or recommend containment
- Safeguard evidence at the triage level, initiate a chain of custody, and avoid actions that might unintentionally destroy it
- Draft a handoff which clearly states findings, scope, unknowns, actions taken, and the exact decision you require
- Communicate on a need-to-know basis through secure channels, and refine your assessment as new evidence surfaces
Course outline
4 sections · 14 lessons · 2h 6m total
Establish What You Know
- What Triage Is Trying to Decide Free Preview On Udemy 09:18
- Recognize Common Incident Patterns 09:48
- Capture the Essential Facts 09:18
- Read the Evidence 10:14
- Build an Initial Timeline and Scope 09:10
Prioritize and Act
- Assess Business Impact and Urgency Free Preview On Udemy 10:23
- Choose Authorized Next Steps 09:11
- Preserve Evidence and Limit Disruption 08:56
Communicate and Hand Off
- Make a Useful Handoff Free Preview On Udemy 08:58
- Communicate During an Incident 08:36
Reassess and Practice
- Update the Assessment as Evidence Changes Free Preview On Udemy 09:09
- Final Case, Part 1: Initial Triage 11:20
- Final Case, Part 2: New Evidence 11:21
- Final Test
About this course
This course discusses the application of artificial intelligence.
You receive an alert: an approved sign-in from a foreign location during the early hours. Should you reset the password? Alert someone? Dismiss it as a false alarm? The decisions made in that critical first hour dictate the course of the incident response: the recording process, preservation of evidence, notification speed, and whether well-intentioned actions lead to further complications.
This training focuses on mastering that initial hour. You will adopt a practical, repeatable triage method based on five key questions: What is it? How serious could it be? How confident are we? Who should be informed? What will happen next? Throughout the course, you'll engage with a fictional case of a suspicious sign-in, observing how the evidence evolves, and ultimately conduct your own triage on a second incident during a two-part final case.
You will learn to:
- Differentiate among an event, alert, suspected incident, and confirmed incident, while identifying false positives and benign alerts
- Identify six prevalent incident patterns along with initial inquiries, urgency indicators, and actions to avoid for each
- Separate triage facts clearly, ensuring observations, assumptions, and unknowns are distinctly recorded
- Interpret sign-in, endpoint, and application logs, grasping the limitations of various fields such as location and multi-factor authentication
- Develop a timeline on one clock and an initial scope to distinguish observed, possible, and unknown factors
- Establish a defendable priority that considers business impact, urgency, and exposure, with confidence assessed distinctly
- Identify permitted next actions: collect additional information, escalate urgently, or suggest containment measures
- Maintain evidence integrity at the triage stage, initiate a chain of custody, and avoid actions that could compromise it, despite good intentions
- Create a handoff document that clearly outlines findings, scope, unknowns, actions undertaken, and the specific decision you require
- Communicate only with those who need to know through secure channels and adjust your assessment as more evidence comes in
This course aligns with the latest incident response guidelines, including NIST SP 800-61 Revision 3 and the six Functions of the NIST Cybersecurity Framework 2.0. Each lesson is supplemented with practical examples and hands-on exercises, and you will have access to eleven downloadable resources in Word, Excel, and PDF formats, such as a triage note template, timeline and scope worksheets, severity and authorization matrices, a handoff template, two evidence packs, and a repeatable triage checklist.
Who this course is for
- Service desk and help desk personnel who handle reports of suspicious activities and make subsequent decisions
- Junior security analysts seeking a straightforward, repeatable procedure for managing the first hour of an incident
- IT operations professionals tasked with responding to alerts and needing to understand possible actions and escalation timing
- Team leaders responsible for directing suspected incidents and wishing for consistent and safe triage practices among their teams