# MEV Protection

### Reflex MEV Protection & Redistribution Layer

MEV has plagued DeFi from the start. Front-running and sandwich attacks quietly siphon value from LPs and traders, padding block builders' pockets instead.

Supernova introduces an MEV protection and redistribution layer that captures extracted profits and routes them back to the protocol’s participants.

Supernova has integrated Reflex into its ve(3,3) DEX design. No redeployments, no liquidity shifts, just instant MEV protection and shared rewards at the pool level. 

How it works:

* **Blocks toxic MEV**: Makes sandwich attacks and front-running unprofitable by design.
* **Recycles profits**: Captures arbitrage opportunities onchain which can be redistributed to Liquidity Providers and Traders.

MEV extraction no longer just pads the pockets of miners, validators, and MEV bots, but can be captured by the Supernova DEX and routed  back to the value creators: LPs, traders, and our protocol ecosystem. This solution is integrated in Supernova in collaboration with Reflex, our technology partner specializing in MEV mitigation and value recapture.

### Just-in-Time Liquidity (JIT) Protection

Just-in-Time (JIT) liquidity attacks are a specialized MEV strategy that exploits concentrated liquidity AMMs like Uniswap v3–style CLMMs. An attacker watches the mempool for a large incoming swap, then injects a huge amount of highly concentrated liquidity just before the trade, and removes it immediately after it executes. Because the swap routes almost entirely through this temporary position, the JIT LP captures most of the fees (and often additional MEV), while long‑term LPs are diluted despite bearing the ongoing price risk. Empirical analyses show that these attacks are capital‑intensive “whale games” dominated by a few bots but still significantly harmful to organic LPs.

To protect long‑term LPs, Supernova has integrated a JIT protection mechanism, which can be enabled to activate a minimum hold‑duration that prevents JIT attacks. Liquidity positions must remain active for a short mandatory period before becoming fully eligible for rewards, which disincentivizes atomic in‑and‑out behavior optimized purely for fee extraction around large swaps. As a risk‑management measure, this protection is wired with a contingency configuration: we can cap the enforced hold time of up to 10 minutes, ensuring the mechanism cannot be used to lock LPs for longer than intended under adverse conditions. Additionally, the system includes a provision to fully disable this feature, allowing us to take away the provision to enable this JIT feature.