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Ledger All ledgers

Input Validation hacks

71 incidents classified as Input Validation, with $755.5m in known losses.

$755.5m lost across 71 incidents, 5.3% of the ledger

Largest: Portal ($326.0m), Orbit Bridge ($81.7m), Qubit ($80.0m).

Known losses by year: Input ValidationThe tallest bar is cut to fit, and its value is printed on it.
DateTargetLostTypeMethodReturned
22 Oct 2026WAX Multi-Chain Bridge$90,500DeFi ProtocolMissing Input Validation—
16 Sept 2026Nimiq$50,400DeFi ProtocolSignature Verification Flaw—
08 Aug 2026Atomic Green$29,984DeFi ProtocolSignature Replay—
07 Aug 2026Ravencoin—ChainMissing Input Validation—
25 Jul 2026Projekt$560,000DeFi ProtocolMissing Input Validation—
23 Jul 2026Lien$542,000DeFi ProtocolMissing Input Validation—
21 Jul 2026FlashTrade$98,000DeFi ProtocolMissing Input Validation—
21 Jul 2026Wanchain$10.0mChainSignature Verification Flaw—
13 Jul 2026Lumi Finance$270,000DeFi ProtocolSignature Verification Flaw—
25 Jun 2026Lixir Finance$12,300DeFi ProtocolSignature Verification Flaw—
01 Jun 2026Gnosis Pay$1.5mOtherSignature Verification Flaw—
23 May 2026Mure$11,700DeFi ProtocolSignature Verification Flaw—
20 May 2026RetoSwap$2.7mDeFi ProtocolMissing Input Validation—
01 May 2026Bisq$550,000DeFi ProtocolMissing Input Validation—
26 Apr 2026Litecoin—ChainMissing Input Validation—
23 Apr 2026Giddy$1.3mDeFi ProtocolIncomplete Signature Coverage—
22 Apr 2026Kipseli$72,350DeFi ProtocolMissing Input Validation—
20 Apr 2026Juicebox V3$52,000DeFi ProtocolMissing Input Validation—
13 Apr 2026Dango$1.9mDeFi ProtocolMissing Input Validation$410,000
11 Mar 2026DBXen$150,000DeFi ProtocolMissing Input Validation—
30 Aug 2025Cozy V2$427,000DeFi ProtocolMissing Input Validation—
25 Aug 2025Panoptic V1.1$0DeFi ProtocolHash Collision—
25 Jun 2025Silo Finance$546,000DeFi ProtocolMissing Input Validation—
27 May 2025Usual USD0$43,000DeFi ProtocolMissing Input Validation—
18 Feb 2025Cardex$400,000DeFi ProtocolSignature Verification Flaw—
15 Nov 2024ThalaSwap$25.5mDeFi ProtocolMissing Input Validation—
11 Nov 2024DeltaPrime$4.8mDeFi ProtocolMissing Input Validation—
23 Sept 2024Bankroll Network$234,800DeFi ProtocolMissing Input Validation—
11 Sept 2024Omnipus$30,000DeFi ProtocolMissing Input Validation—
01 Aug 2024Convergence$210,000DeFi ProtocolMissing Input Validation—
24 Apr 2024YIEDL$150,000DeFi ProtocolMissing Input Validation—
23 Apr 2024Magpie Protocol$129,000DeFi ProtocolMissing Input Validation—
19 Apr 2024Hedgey$44.7mDeFi ProtocolMissing Input Validation—
28 Mar 2024PrismaLST$11.6mDeFi ProtocolMissing Input Validation—
16 Feb 2024ParticleTrade$140,000DeFi ProtocolMissing Input Validation—
15 Feb 2024Miner$466,000TokenMissing Input Validation—
01 Feb 2024Affine Protocol$88,000DeFi ProtocolMissing Input Validation—
16 Jan 2024Bungee$3.3mDeFi ProtocolMissing Input Validation—
31 Dec 2023Orbit Bridge$81.7mDeFi ProtocolSignature Verification Flaw—
20 Dec 2023Transit Finance$110,000DeFi ProtocolMissing Input Validation—
06 Dec 2023TIME$190,000TokenMissing Input Validation—
29 Oct 2023Astrid Finance$228,000DeFi ProtocolMissing Input Validation—
06 Sept 2023GMBL.COMPUTER$770,000DeFi ProtocolSignature Verification Flaw—
03 Jul 2023AzukiDAO$68,000DeFi ProtocolSignature Replay—
10 Apr 2023SushiSwap$3.3mDeFi ProtocolMissing Input Validation$3.3m
15 Feb 2023Multichain$130,000DeFi ProtocolSignature Verification Flaw—
17 Jan 2023OmniEstate$70,705DeFi ProtocolMissing Input Validation—
05 Dec 2022RFB—DeFi ProtocolMissing Input Validation—
18 Nov 2022Polynomial$7,000DeFi ProtocolMissing Input Validation—
16 Nov 2022SheepFarm$72,000DeFi ProtocolMissing Input Validation—
02 Nov 2022Skyward Finance$3.0mDeFi ProtocolMissing Input Validation—
27 Oct 2022Team Finance$15.8mDeFi ProtocolMissing Input Validation—
21 Oct 2022Bond Protocol$300,000DeFi ProtocolMissing Input Validation—
02 Oct 2022Transit Swap$28.9mDeFi ProtocolMissing Input Validation—
01 Jul 2022Quixotic$100,000NFTfiSignature Verification Flaw—
08 Jun 2022ApolloX$2.1mDeFi ProtocolSignature Verification Flaw—
23 Mar 2022Cashio$52.8mDeFi ProtocolMissing Input Validation—
09 Mar 2022Fantasm Finance$2.6mDeFi ProtocolMissing Input Validation—
03 Mar 2022Treasure$1.4mDeFi ProtocolMissing Input Validation—
08 Feb 2022Superfluid$8.7mDeFi ProtocolMissing Input Validation—
06 Feb 2022Meter$7.7mDeFi ProtocolMissing Input Validation—
02 Feb 2022Portal$326.0mDeFi ProtocolSignature Verification Flaw$326.0m
28 Jan 2022Qubit$80.0mDeFi ProtocolMissing Input Validation—
18 Jan 2022Multichain$1.4mDeFi ProtocolMissing Input Validation—
18 Oct 2021Glide Finance$300,000DeFi ProtocolMissing Input Validation—
15 Aug 2021Ref Finance$3.2mDeFi ProtocolMissing Input Validation—
25 Jun 2021xWin Finance$270,000DeFi ProtocolMissing Input Validation—
07 Jun 202188mph—DeFi ProtocolMissing Input Validation—
09 Feb 2021Growth DeFi$1.4mDeFi ProtocolMissing Input Validation—
22 Nov 2020Pickle$19.7mDeFi ProtocolMissing Input Validation—
23 Dec 2019Nuls$480,000Layer 1Signature Verification Flaw—

Amounts are DefiLlama’s estimates and can change as incidents are revalued. Its returned figure can include money a company repaid itself, not only funds recovered from attackers. Source: DefiLlama.

Cite this Bitminer.io, “Input Validation hacks”, data to 2 November 2026, https://bitminer.io/ledger/failures/method/input-validation/. How this is built