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Coming 2027 · In development

Team-based cyber range · King of the Hill + CTF

Hold the Crown. Prove it with evidence.

Red attacks, Blue defends, and the scoreboard is computed from a tamper-evident ledger, not opinions. Built as a tournament for colleges.

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CROWN CONTROLTICK 0870
BLUE 38%RED 62%
  • 00:02:10RedFoothold gained: web-01+30
  • 00:07:45BlueIntrusion detected: web-01+15
  • 00:11:20BlueHost contained: web-01+25
  • 00:14:30BlueService restored: web-01+20
  • 00:16:05RedCTF objective verified+50

Illustrative sample data, not a real match.

00:18:40 Blue Service restored: db-0100:21:12 Red Crown control taken00:23:55 Blue Crown control retaken00:26:30 Red Credential reuse verified00:29:02 Blue Persistence removed: web-01

How a match works: two teams, one network, one ledger

  1. 01

    One live range, two teams

    Red and Blue play on the same simulated network at the same time.

  2. 02

    Crown control plus objectives

    Control of the Crown Asset is scored continuously. Discrete CTF objectives add to it.

  3. 03

    Scored on evidence

    Verifiers and telemetry decide every point, and the match can be replayed from the ledger.

Features

Evidence-based scoring
Points come from a hash-chained, append-only ledger. Player claims don't count.
Side-swapped rounds
Each match is two rounds, and the teams swap sides between them.
Concurrent matches
Many matches can run at once, each on its own isolated range.
Replayable timelines
Step back through a match for the post-match debrief.
Teacher-run events
Students join with a callsign only, so we hold no personal data about them.
Randomized scenarios
Each exercise is randomized per run. The first scenario is "SOHO Compromise".

Synthetic targets, built by us

Every target is intentionally vulnerable and made by us for the exercise. Nothing touches real systems.

  • Each match runs on its own isolated range
  • Egress is denied: nothing on the range can reach the internet

Bring Zer0-Grounds to your campus.

It's in development for 2027. Tell us about your program and we'll keep you posted.

Or email info@linezerocyber.com

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