Play
Capture the flag
Break into vulnerable apps, dig through logs and packet captures, and grab the flag. Live targets start up just for you.
CTF training for the next generation
Hack.Learn.Compete.
Built for students, educators and teams.
Sharpen your skills. Climb the leaderboard.
Represent your school.
55+Challenges
40+Live targets
8Guided paths
FreeNo card needed
What you do on Bruise
Four ways toget good.
Learn
Guided paths
Step-by-step paths through web hacking, ciphers, forensics, log analysis and more, with questions that check your work as you go. Stuck? Spend points on a hint.
Teams
Squad up
Start a team, invite people with a link and compete together. Instructors can run whole classes on Bruise.
Events
Compete live
Timed CTFs with a live scoreboard and first bloods, and a scoreboard freeze for the final stretch.
For instructors
Run yourclass.
Classes in a minute
Students join with a code. Assign challenges with due dates and see who has finished what.
Timed exams
Open and close times, a clock per student, lockdown mode, and extra time for students who need it.
See what they see
With a student's OK, watch their screen live or step in to help, right from the roster.
Reports and grading
Progress by skill, writeups to grade with an AI-suggested score, and a grades export.
Run the room
Pause the class and its lab clocks, send a banner or a lock-screen message, or switch the AI tutor off.
Fair play
Every player gets their own flags, so a shared one gives itself away. Signals point you at what to look into.
Pricing
Free.For now.
Everything on Bruise is free right now. No plans, no payment, no card.