Summary
Silo V2 is a non-custodial, permissionless isolated lending market protocol operating across Ethereum, Arbitrum, Base, Optimism, and Sonic. On June 25, 2025, an unreleased peripheral leverage contract was exploited for approximately $545,000 (224 ETH) belonging to SiloDAO test funds; the team confirmed that all core markets and user deposits were unaffected. The incident revealed inadequate input validation and absent formal verification on pre-release code that had been deployed to mainnet, and the attacker subsequently laundered the stolen ETH through Tornado Cash.
Connected Entities
1 entitiesTimeline(12 events)
2021-01-01
Silo Finance founded and initial protocol design work begun on isolated lending market architecture.
2023-04-27
Whitehat submits critical vulnerability report via Immunefi disclosing interest rate model (IRMV1) flaw that could have exposed approximately $3 million in Ethereum-market deposits.
Silo Finance vulnerability disclosure (Medium)2023-05-01
Silo deploys patched interest rate model (IRMv2), fixing the utilization ratio calculation vulnerability.
Certora Silo Finance Post-Mortem2023-06-06
Silo Finance publicly discloses the 2023 vulnerability and awards 100,000 USDC bug bounty to the whitehat reporter.
Silo Finance Medium vulnerability disclosure2024-01-01
Silo V2 announced with expanded architecture: multichain deployment, programmable markets, Silo Vaults, and xSILO revenue token.
Silo Finance 2024 Roadmap (Medium)2025-05-28
Cork Protocol exploited for approximately $12 million (3,761 wstETH); attacker address later linked to Silo Finance exploit.
Bitget News / PeckShield2025-06-25
Silo Finance leverage contract exploit occurs at 14:11:23 UTC; 224 ETH (~$545,000 in SiloDAO test funds) drained via improper input validation in unreleased LeverageUsingSiloFlashloanWithGeneralSwap contract.
Silo Finance post-mortem (Medium)2025-06-25
Silo Finance pauses the affected contract on Ethereum and Sonic networks; confirms core markets and user funds unaffected.
Silo Finance post-mortem (Medium)2025-06-25
SILO token price drops approximately 11% following public disclosure of the exploit.
Ainvest2025-06-25
PeckShield flags attacker wallet as linked to the Cork Protocol exploit; both incidents involve Tornado Cash fund laundering.
Cryptopolitan2025-06-25
Attacker routes stolen 224 ETH through Tornado Cash in multiple transactions to obfuscate fund trail.
QuillAudits hack analysis2025-06-26
Certora publishes incident post-mortem acknowledging that Certora Prover was not applied to the exploited leverage contract, and that formal verification would have detected the user-controlled external call vulnerability.
Certora incident reportDecision Log
- hash: 49JgWR59bPbFaPwoL5C1GRmQDWwfqSYNaYRnUgA8jyyA
- hash: H1p64D153v55Fa2StwX93c3k7dRtvJDBuTCW9wp6XQ7M
- hash: DxKZVdHhWAshMwEPte31ze5FDeZTxA8u8crACpTnWgqW
This investigation is cryptographically anchored to the Solana blockchain and source URLs are archived via the Internet Archive.
model: claude-sonnet-4-6
generated: 5/4/2026, 2:54:17 AM
last updated: 6/9/2026, 9:56:14 PM
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