The changed invoice.
An invoice arrives with a new payment address. Spot it before anyone pays.
FOR TEAMS ON-CHAIN / SECURITY FIRST
Blockchain products.
From infrastructure
to every signature.
ChainFence crafts blockchain products with security built in from the first line. We start where most losses start: with people, keys and signatures.
Founder-led. Engineering and security roots.
01 / WHAT WE BUILD
CHAINJITSU BY CHAINFENCE / FREE
Chainjitsu.
Practise the attack
before it’s real.
Most losses in Web3 don’t start in a smart contract. They start with a convincing invoice, a helpful “support” agent, or a signature that looks like a sign-in. Chainjitsu is free security awareness training for Web3 teams.
Visit chainjitsu.ioFree for every team. No paid plan.
Updated payment details
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New0x8E3d…41Bc
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WHAT TEAMS PRACTISE
Helpful “support”.
Someone from “support” asks for a recovery phrase. Learn why no one ever needs it.
The meeting link.
An invite leads somewhere it shouldn’t. Check before you click.
The sign-in that isn’t.
A wallet signature looks like a login but grants unlimited spending. Read before you sign.
HOW A MISSION WORKS
- 01
Assign.
Owners pick missions for their team.
- 02
Play.
A fictional workday with a training mailbox, chat, browser and wallet.
- 03
Debrief.
Every mission ends with a clear debrief. Owners see the results.
Nothing real at risk. No real wallets, keys or funds.
02 / FOUNDER
Miloš Radić
Founder
Miloš started as a software engineer and moved into security: DevSecOps, security architecture and security leadership, much of it in Web3. ChainFence is where he builds the tools he wished existed.
Engineering first. Security throughout.
03 / CONTACT
Say hello.
Questions about ChainFence or Chainjitsu? One email is enough.