Cybersecurity
Start at Lumen Coffee's security desk: read the alerts, find out what happened and stop it, one ticket at a time.
83 lessons83 challenges
- Beginner friendly
Hands-on interactive lessons
Free certificate of completion
Syllabus
Section 1
Security Fundamentals
Start sectionStartBecome Lumen Coffee's first security analyst: investigate alerts, review access, strengthen passwords, handle email attacks, verify authorization, and contain and recover from an incident.The First Alert
7 lessons7Phishing
4 lessons4Access Control
8 lessons8Passwords
7 lessons7Email Attacks
8 lessons8Rules of the Job
3 lessons3Incident Response
6 lessons6Section 2
Investigating a Breach
Start sectionStartFollow suspicious programs back to their source, save evidence, remove what keeps them running, and bring Lumen Coffee safely back to work.Follow the Evidence
5 lessons5Make the Cleanup Last
5 lessons5Work Out What Happened
5 lessons5Prove the Recovery
5 lessons5Section 3
Stopping the Spread
Start sectionStartTrace suspicious connections, contain affected computers, restrict access, and keep Lumen Coffee’s orders and payments working during an incident.Trace the Connection
5 lessons5Close the Unwanted Route
5 lessons5Contain More Than One Computer
5 lessons5Recover and Verify
5 lessons5
Learn by Investigating
Every ticket is an incident at a simulated company. Read the logs, act from a real terminal, and watch the company react to each change.
Many failed sign-ins mail
Happening now61 failed sign-ins on 8 accounts since 09:02
Where the attempts come from
- 59 failed on 8 accounts
- 2 failed on 1 account
Build Your Security Streak
Stay consistent and watch your progress grow! Close a ticket a day, protect your streak with freeze days, and earn rewards for showing up every day.
12 days streak
Return tomorrow to keep your streak!
January 2026
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Double or Nothing
Day 5 of 7
Streak Freeze
2 left
You're Not Alone
Compete on global leaderboards, invite friends to earn rewards, and celebrate each other's wins. Every incident is easier with a team!
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Promotion zoneEarn a Certificate
Earn a certificate when you complete a section. Add it to your LinkedIn profile to show the incidents you have handled.
Certificate of Completion
Security Fundamentals
Add to LinkedInWhy learn cybersecurity with Coddy
- Every lesson is a ticket at a simulated coffee company, with logs, accounts and machines to check.
- You act from a terminal and see what each change did: who was signed out, what was blocked, what kept running.
- Lessons build on each other, from a first alert to tracing a breach and stopping it from spreading.
- Finish a section to earn a free certificate you can share.
Frequently asked questions about this course
Can I start without cybersecurity experience?
Yes. The first lesson starts from what cybersecurity is, and every command is shown before you need it.
How long does it take to learn Cybersecurity?
The course has three sections of short lessons. There is no deadline, so you can go at your own pace.
Can I learn Cybersecurity online for free?
Yes. Every lesson is open on the free plan, which has a daily limit. A paid plan removes the limit.
Do I need to install anything to learn Cybersecurity here?
No. The terminal and the company console open in your browser.
How should I practice?
Do a few tickets a day. When you finish a section, open an investigation and use the same skills on a different company.
Do I get a Cybersecurity certificate when I finish?
Yes. Each of the three sections gives you its own free certificate when you complete it, with an ID anyone can verify.
