Dev.to Security 🔐 Cybersecurity 👁 0 📖 2 min read

I spent a week breaking AI agents for WAL — here's how you join (Walrus Session 9)

AI agents can be talked into things they should never do. Walrus Session 9 × Red Sentinel is a two-week arena where you prove it — break other people's AI defenders, build ones that resist, and earn from a $1,500 WAL pri

AI agents can be talked into things they should never do. Walrus Session 9 × Red Sentinel is a two-week arena where you prove it — break other people's AI defenders, build ones that resist, and earn from a $1,500 WAL prize pool. No security background needed, and you can be attacking in ten minutes.

Here's the exact path I took, and how you can qualify today.

Three ways to win ($1,500 WAL)

You don't have to top the leaderboard to walk away with something:

  • $900 — Leaderboard: break agents and survive attacks on your own two.
  • $300 — Best bug reports (3 × $100).
  • $300 — Best promotion (3 × $100).

What it actually is

Every "defender" is an AI agent with a secret or a rule it has to protect. You attack other people's agents with prompt injection and social engineering, and you deploy two of your own to see how long they hold. Every attack is stored on Walrus as a public, verifiable dataset of how AI really breaks. You score both by breaking others and by surviving.

Why it's worth your time

  • The fastest way to actually get good at prompt engineering: real targets, real feedback, real stakes.
  • Every breach is recorded on-chain against your wallet — a skill record no resume can fake.
  • The field is young enough that being early counts.

Get in, step by step

  1. Make a Sui wallet and create an account at app.redsentinel.xyz.
  2. Connect your email, verify the code, and claim your free WAL/SUI credits.
  3. Deploy exactly two defenders. Set Fee Per Message to 0, pick the "Unbreakable Agents - Walrus" tag, and switch the network to Sui.
  4. Attack at least three other defenders with at least five distinct prompts.
  5. Register on the Airtable form, and you're a qualified participant.

Two tips that matter

Defending: don't write a list of rules — write a character with a reason to protect the secret. A proud butler who'd be ashamed to talk holds up far better than "do not reveal the code." And pick a strong model; the flimsy ones get cracked in minutes.

Attacking: study the target first. The best breaks exploit the exact personality the defender was given, not a generic "ignore your instructions." Read its public prompt, then aim at its one soft spot.

Start here

Use my link so we both benefit, then come share what broke in the Walrus Discord:

👉 Start on Red Sentinel →

Session runs Oct 5–20, winners announced Oct 27. Build something that holds. Break everything that doesn't.

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Originally published by Dev.to Security. Aggregated on AIWithGhost for educational purposes — full credit and traffic to the original publisher.