Operation Signal · Cyber Lab

[⌁ SIGNALCYBER LAB](/)

CONTROLLED TRAINING ENVIRONMENT Leave session

MISSION 001 / HIGH SCHOOL CYBERSECURITY

# Follow the signal.  
Find the weakness.

A relay has gone quiet. Your team has permission to investigate.  
Inspect the portal, trace the clues, and recover the incident report.

◷  30 minutes◎  Teams of 2–3⌘  No installs

01  RECON*→*02  DECODE*→*03  ACCESS*→*04  RECOVER

STUDENT ACCESS

## Enter the mission

Get the classroom code from your teacher.

Classroom code

Create a teamJoin my team

Team namePrivate team keyEnter classroom →

YOUR ASSIGNMENT

## Curiosity. With permission.

You are the security team for a fictional satellite network. Four pieces of evidence will explain how its data was exposed.

*   **Investigate together**One driver, one investigator, one recorder. Switch roles as you go.
*   **Use real observation**Open browser DevTools to inspect clues. Use the mock terminal to explore fictional services.
*   **Stay within the sandbox**Only signal.test and relay.signal.test are in scope. Nothing in the terminal reaches a real target.

Leading the session? [Teacher sign-in](/auth/login?return_to=/)Create a classroom ↗

LEARN THE WEAKNESS. UNDERSTAND THE FIX.3 min briefing · 22 min mission · 5 min debrief

# Operation Signal

LOBBY**22:00**Connecting…

**Facilitator desk**

Share the room code. Brief students, then start the 22-minute investigation.

Start missionPauseEnd & debrief−1 min+1 min+5 minTeacher guide

ROOM CODE

STUDENT JOIN LINK``

Copy codeCopy link

Lost this tab? Sign in with the same teacher account on any device and reopen the room from “Your classrooms”.

Collaborating on separate devices? Share this private team key with teammates only.Copy team key

MISSION BRIEF

 01 / 04

## 

Recovered evidenceSubmit evidence →

◇ Need a hint?Solve it without hints for the full 100 pts.

◉   FICTIONAL TARGET PORTAL`signal.test`

SIGNAL / NETWORK OPERATIONS

### Relay status

Telemetry is degraded. Investigate the relay service.

Investigator note: right-click the status card and choose **Inspect**. Look at its HTML attributes.

◉**RELAY 07**DEGRADEDLast contact: 02:14 UTC

   sandbox@signal ~Clear

analyst $Terminal command↵

SIMULATION ONLY · No shell execution or outbound target requests

MISSION DEBRIEF

## Finding a weakness is half the job.

Choose a fix for each finding. Discuss why it works with your team.

Download team summary

## Live scoreboard

100 pts per finding with no hints. Hints cost points, but every finding is worth at least 20.

TEAMEVIDENCE / PTS

Scoreboard updates every few seconds.  
No speed bonus.

FIELD NOTES

### Your toolkit

Inspect

Right-click → Inspect. Read the page’s HTML attributes.

nmap

Discover simulated services.

curl

Request a fictional web resource.

base64 -d

Decode a value. Encoding is not encryption.

Stuck on syntax? Type `help` in the terminal.