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LeetSwap

avoid.net/leetswap→32/100·82% conf.
[AI-DRAFTED · AWAITING VERIFICATION][src:defillama]

Auto-generated score, not yet verified against the scoring model. Under review — treat as indicative, not a verdict.

anchored·5xWoda…nv2R

Summary

LeetSwap was a decentralized exchange (DEX) launched on Coinbase's Base Layer 2 network in mid-2023 and briefly held the position of the network's largest DEX by trading volume and total value locked. On August 1, 2023, shortly after Base's mainnet opened to all users, an attacker exploited a publicly exposed smart contract function to drain approximately 342 ETH (~$630,000) from multiple liquidity pools. The protocol halted trading, partially recovered funds through white-hat rescue operations, and has since operated at a fraction of its pre-exploit TVL, with no public audit ever confirmed prior to the incident.

Connected Entities

1 entities
Protocols
⌂LeetSwap
Relationships
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    Timeline(12 events)

    February 2023

    LeetSwap contracts initially built and deployed on Canto blockchain during a monthly hackathon.

    13 July 2023

    Coinbase opens Base mainnet to builders; LeetSwap deploys on Base and begins accumulating TVL.

    30 July 2023

    BALD memecoin rug pull on Base drains approximately $12.5 million in ETH liquidity, setting a turbulent backdrop for the Base ecosystem.

    31 July 2023

    LeetSwap reaches peak TVL of approximately $41.2 million, holding position as Base's largest DEX.

    August 2023

    Attacker exploits the publicly exposed `_transferFeesSupportingTaxTokens()` function in LeetSwapV2Pair contract, draining approximately 342 ETH (~$630,000) from multiple liquidity pools.

    August 2023

    LeetSwap halts all trading and activates the Solidly-inherited factory security pause function.

    August 2023

    PeckShield, CertiK, Beosin, and BlockSec confirm the exploit on-chain. Wintermute research head Igor Igamberdiev publicly attributes the drain to the exposed function.

    August 2023

    LeetSwap TVL collapses from $41.2 million to approximately $7.17 million, an 83% decline.

    August 2023

    ZachXBT publicly flags LeetSwap and comments on the exploit via social media.

    August 2023

    LeetSwap posts public message requesting attacker return all funds except 50 ETH (~$92,000).

    4 August 2023

    LeetSwap publicly denies fake airdrop announcements circulating on social media following the exploit.

    9 August 2023

    Base network opens to all public users. LeetSwap's white-hat recovery operations yield 314 ETH from at-risk pools for distribution to liquidity providers.

    Provenance & Audit Trail
    Anchored on SolanaVerify on-chain10 Wayback Archivessrc:defillama

    Decision Log

    This investigation is cryptographically anchored to the Solana blockchain (1 event). 10 of 18 cited source URLs have an Internet Archive snapshot.

    full audit log →version history →

    model: claude-sonnet-4-6

    generated: 5/4/2026, 2:54:39 AM

    last updated: 8/30/2026, 5:14:10 AM

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