$ ./range --describe
CTF Range [ BETA ]
for security leads training engineers
Eight challenges, 2,800 points, against a retired mainnet deployment. First bug found before production.
// problem
Engineers meet their first real bug in production. That is the most expensive place to meet it.
// what you get
- Eight challenges. 2,800 points.
- Runs against a retired mainnet deployment — real object model, real gas, real edge cases.
- Instructor console, cohort scoreboard, exportable results.
$ ls ./categories
access controlarithmeticobject modelrandomnessupgradegasoraclescross-package
$ pricing
team seat$150 / engineer / quarter
instructor add-on$400 / quarter
starter team (8 seats)$1,200 / quarter
$ start
trial
$
cohortrange trial --seats 3$
range cohort new --name q2-2026