The $1.1M Trap: how toxic-collateral markets farm liquidation bots

We pulled 32,000 on-chain liquidations to answer a boring question — how much warning do borrowers get before they're liquidated. We found something else on the way: a slice of those liquidations aren't accidents at all. They're bait, and automated bots are bleeding over a million dollars every two months walking into it.

The anomaly: bots paying more than they get

In a healthy liquidation, the liquidator repays a borrower's debt and seizes collateral worth a little more — that spread is the liquidation bonus, their profit. So a liquidation where the seized collateral is worth less than the debt repaid should basically never happen. A competent bot simulates the exit first and walks away.

Yet 585 of the liquidations we indexed were negative-win — the liquidator repaid more than it could recover. Filter out the small change and the losses concentrate hard: 36 liquidations account for $1.87M of red ink. Someone's bots are losing real money, on purpose-built terms.

Not bad luck — a design

The tell is in the structure. Sort the losses by collateral and a signature jumps out:

Every trap is the same shape: a single market, a handful of borrowers, one illiquid or no-name token. Compare WETH — spread across 22 bots, 53 borrowers, 3 markets. That's organic noise (partial fills, stale accounting). The others are engineered. One is even called REKT.

Anatomy of one trap

Take the AVLT market. On-chain it's a permissionless Morpho Blue market anyone can deploy:

A no-name token, a bespoke price oracle putting it above a dollar, and an aggressive loan-to-value — on a market nobody vetted. A borrower deposits the token, borrows real USDC against the oracle's number, and lets the position go underwater. A naive bot sees "oracle says profitable," liquidates, repays the USDC — and is left holding a token it can't sell. One such bot, still active this month, has done this 30 times for a $220k loss.

The whole thing in one line

That's also why this is not a clever-but-legal edge — it's the oracle-manipulation playbook that's already been prosecuted (see: Mango Markets). We're documenting it so you can spot and avoid it, not run it.

What to do about it

• Running a liquidator? Simulate the exit swap, not just the oracle profit. If the collateral can't be sold for what you repay, skip — no matter how green the oracle looks.
• Supplying to a lending market? A custom oracle + an illiquid collateral token + high LLTV is the trap signature. Your deposits are the fuel.
• Borrowing legitimately? Know which market you're in and how your collateral is priced — the same due diligence that keeps you from being liquidated by surprise.