cyberkul.
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CyberKul — learn tech skills by doing. Build software, grow a company, train models, break real machines — all in your browser.

// hands-on tech skills · learned in your browser
STATUS · ALL SYSTEMS LIVE · 5 ARENAS ONLINE

Real IDEs. Real notebooks. Real live labs — in the browser, from the first minute.

CyberKul is a gamified, hands-on platform where you build real software, grow a real company, train real models, and break into real machines — then earn the XP, streaks, badges and certificates to prove it. No slides. No toy sandboxes. Just the work.

300+ browser labs XP & levels Daily streaks Verifiable certs
Start free → Pick a discipline ↓
PICK YOUR DISCIPLINE ↓
LIVE
0learners training now
0labs live
0flags captured today
4 / 4disciplines online
Why CyberKul

Skills compound when you do the work.

Watching a lecture feels like progress. Shipping a passing test, closing a funnel, or capturing a flag is progress. We built the whole platform around the second one.

[01]

Real environments, not toy sandboxes

A real IDE, a real Jupyter notebook, a real vulnerable network. The tools open in your browser — nothing to install, nothing faked.

[02]

Learn by doing, graded for real

Every exercise runs. Run the visible tests, submit your solution, capture the flag by hash. You get signal, not a participation checkmark.

[03]

Progress you can measure

XP, levels, streaks, leagues and a leaderboard turn "I studied" into a number that moves — and a certificate you can actually verify.

Choose your arena

Five arenas. One playground.

CodeBeta

Build software in a real IDE. Run the visible tests, then submit.

Start →
MarketLive now

Run AEGIS HQ — grow a company like a game. Real funnel, real metrics.

Start →
ModelLive now

Train models in a notebook. Climb a hidden-holdout leaderboard.

Start →
DefendLive now

Live labs. CTF. Three hops to Domain Admin.

Start →
Placement-prepNew

Interview & job-placement prep — DSA, aptitude, mock interviews, portfolio.

Start →
// try it now — no signup

crack your first flag.

Every lab ends in a flag — a secret string you capture to prove you solved it. Warm-up: the flag below is Base64-encoded. Decode it, paste the result, and capture your first flag — right here, no account needed.

ENCODED FLAG Y3liZXJrdWx7eTB1cl9maXJzdF9mbGFnfQ==

Hint: it's Base64. Decode it in a terminal (echo '…' | base64 -d), the browser console (atob('…')), or any online decoder.

Learners training from
Northbridge Institute of Technology Aurora State University Meridian Bootcamp Cohort 07 — Backend Guild Helix Data Academy Vantage School of Computing Redwood CS Society Team Nightingale
Learner signal

They stopped watching. Then this happened.

"I'd 'finished' three video courses and still froze on a blank file. Two weeks of CyberKul labs and I shipped my first real feature — because I'd already done it fifty times."

Priya N.Career-switcher · Code track

"The hidden-holdout leaderboard is ruthless in the best way. You can't fake a good model — you either generalize or you drop. It made me a genuinely better engineer."

Marcus O.ML learner · Model track

"Three hops to Domain Admin on a live lab, flag captured by hash. That single evening taught me more than a semester of slides."

Sofia R.Defender · Defend track
Live · CyberKul activity

The feed never sleeps.

A live look at what people are actually doing on the platform right now — tests passing, flags captured, models submitted, streaks extended. This is what learning-by-doing looks like at scale.

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labs live right now
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leagues in play
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flags captured today
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tests passed today
Latest activityLive

    See your own name in the feed. Your first lab is free — no card, no install.

    Start your first lab →
    The game layer

    Every rep earns something.

    Progress isn't a vibe here — it's a system. Earn XP on every solve, keep the streak alive, climb your league, and unlock badges that mean you actually did the thing.

    operator_you · Level 14
    XP
    8,420 / 10,000 XP to Level 14
    Streak
    🔥31-day streak personal best

    Don't break it — one lab keeps it alive.

    League
    Gold League · Rank 6 of 30 · ▲2 this week
    • 01operator_ka129,980
    • 02learner_mh089,420
    • 03team Nightingale9,110
    • 04operator_dl038,870
    • 05learner_tn218,610
    • 06operator_you8,420
    Badges · 18 earned
    First Blood Test Slayer Holdout Hero Domain Admin 30-Day Flame Funnel Master

    Solo or as a team — every metric rolls up to your classroom or org.

    The loop

    Do. Earn. Climb.

    One simple loop under everything — the more you do, the more it compounds.

    01 / DO

    Open a real environment and do the work.

    A live IDE, notebook, or vulnerable network spins up in your browser. You write real code, run real tests, capture real flags — instantly, nothing to install.

    Layer · Practice
    02 / EARN

    Every solve pays out XP, badges and streaks.

    Graded for real — tests must pass, flags verify by hash, models score on a hidden holdout. Signal you can trust, rewards you can see.

    Layer · Progress
    03 / CLIMB

    Level up, climb your league, get certified.

    Ride the leaderboard, hold your league, and turn a run of solves into a verifiable certificate you can share.

    Layer · Proof
    For organizations

    Bring the whole cohort.

    CyberKul runs solo or as a team. Spin up a classroom, assign tracks, and watch a live roll-up of who's doing the work — across universities, bootcamps and engineering orgs.

    Built for
    • →Universities & CS departments
    • →Coding bootcamps & academies
    • →Engineering & data teams onboarding
    • →Student clubs, guilds & competitive teams
    What you get

    Classroom mode

    Invite a cohort, assign disciplines, and track every learner's XP, streaks and completions in one dashboard.

    Team leaderboards

    Private leagues and head-to-head ladders that make practice competitive — and completion visible.

    Verifiable certificates

    Every learner earns shareable, verifiable certs on completion — proof for a portfolio or a transcript.

    Progress reporting

    Measurable outcomes: solves, pass rates, and time-on-task rolled up per class or org.

    UniversitiesCS departments · assign tracks, grade by doing
    BootcampsCohort mode · leagues · live roll-up
    TeamsOnboarding & upskilling · private leaderboards
    Talk to us about teams →
    Who's behind cyberkul

    Built by a practitioner, for real skills.

    Lav Mishra, Founder & CEO of cyberkul

    Lav Mishra

    Founder & CEO

    An IIM Kozhikode alumnus with over a decade of leadership in cybersecurity, enterprise software, and integrated marketing, Lav is CEO of cyberkul, focusing on cybersecurity and AI-driven solutions. He previously drove operational growth and major deals as Senior Manager at Enterslice, and led corporate strategy as Manager at Jaypee Infratech. He founded cyberkul to close the gap between classroom theory and real, job-ready cybersecurity skills — helping students learn by doing, not memorizing.

    Connect on LinkedIn info@cyberkul.com
    Your path

    What your first week looks like.

    01 / Pick a discipline

    Code, Market, Model or Defend.

    Start free in the one that pulls you. Switch or stack them anytime — one account, four arenas.

    02 / Do real labs

    Open a live environment and solve.

    Real IDE, notebook or network in your browser. Run the tests, capture the flag, submit the model — instantly.

    03 / Earn XP & badges

    Get paid for every solve.

    XP, levels, badges and a daily streak track exactly how far you've come — and keep you coming back.

    04 / Climb the leaderboard

    Ride your league to the top.

    Weekly leagues and global leaderboards turn solo practice into something you can win.

    05 / Get certified

    Turn the run into proof.

    Complete a track and earn a verifiable certificate you can share with a school, a team, or an employer.

    What you walk away with

    • 01A portfolio of things you actually built and broke.
    • 02A measurable XP/level history and streak record.
    • 03Badges that map to real, graded accomplishments.
    • 04Verifiable certificates for completed tracks.
    See all disciplines Start free →
    Questions, answered

    Before you start.

    The things people actually ask on the way in.

    No. Every environment — the IDE, the notebook, the live labs — runs in your browser. If you can open this page, you can start doing real work in the next minute. Nothing to download, nothing to configure.
    Yes. You can create an account and do your first labs free — no credit card. Paid plans unlock unlimited labs, every discipline, and team features, but you'll do real work before you ever hit a paywall.
    Yes. Complete a track and you earn a verifiable certificate you can share on a portfolio, a résumé, or with your school. Because everything is graded for real — tests pass, flags verify by hash, models score on a hidden holdout — the certificate actually means you did it.
    Real practice. You write real code in a real IDE, grow a real company simulation in Market, train real models in a notebook, and break into real vulnerable machines in Defend. No multiple-choice, no toy sandboxes — you do the actual work and it's graded.
    Absolutely. Classroom mode lets you invite a cohort, assign disciplines, run private leagues, and see a live roll-up of everyone's XP, streaks and completions. Universities, bootcamps and engineering teams use it for hands-on curriculum and onboarding.
    Every solve pays out XP toward your level. Do something each day to keep your streak alive. Weekly leagues group you with peers at your pace, and a global leaderboard tracks the top of each discipline — so practice always has a scoreboard.
    Initialize your account

    Stop watching. Start doing.

    Drop your email and we'll spin up your first free environment. No install. No card. Just the work.

    Prefer to browse first? Pick a discipline ↑