cryptonist

Hacks

Crypto hacks on Polygon

Data as of 3 October 2026

62 recorded incidents on Polygon took $1.6B in total between 2021 and 2026. The largest was Poly Network, $611.0M in 2021. That is 4.8% of all incidents in DefiLlama's record and 7.4% of the value lost. A multi-chain incident counts its full amount on each chain it touched, so chain totals overlap and together exceed the overall total. Amounts are the losses DefiLlama records, and its record does not say whether they are before or after any recovery. Data as of 3 October 2026.

By year, on Polygon

  • 2021 $980.1M lost
    12 incidents
  • 2022 $22.8M lost
    10 incidents
  • 2023 $155.7M lost
    12 incidents
  • 2024 $32.9M lost
    6 incidents
  • 2025 $355.0M lost
    7 incidents
  • 2026 $7.5M lost
    15 incidents
Incidents per year on Polygon, with value lost in millions of US dollars. Source: DefiLlama, retrieved 3 October 2026.

Incidents on Polygon

Incidents on Polygon. Newest first. Source: DefiLlama.
DateIncidentClass TechniqueChainsAmount
2026-09-24 Limit Break Payment Processor Access Control Token Approval Abuse Ethereum, ApeChain, Polygon, Base $1.8M
2026-09-21 DoinGud Protocol Logic Swap Logic Flaw Polygon $35K
2026-09-16 Nimiq Input Validation Signature Verification Flaw Polygon $50K
2026-07-26 ChainConnect Access Control Improper Access Control Ethereum, BSC, Avalanche, Polygon $650K
2026-06-25 Polymarket International Frontend & Infrastructure Frontend Compromise Polygon $3.0M
2026-06-25 Ocean Protocol Protocol Logic Deposit Logic Flaw Polygon $128K
2026-06-23 Royal.io Token & Share Accounting Incorrect Share Accounting Polygon $263K
2026-05-22 Polymarket Key Compromise Private Key Compromised Polygon $700K
2026-05-19 ElevateFi Oracle Manipulation Spot Price Manipulation Polygon $16K
2026-05-11 INK Finance Access Control Caller Impersonation Polygon $140K
2026-05-11 Huma Access Control Improper Access Control Polygon $101K
2026-04-27 ZetaChain Access Control Token Approval Abuse Ethereum, Base, Polygon, Arbitrum, Avalanche, BSC $334K
2026-03-31 WhaleBit Oracle Manipulation Spot Price Manipulation Polygon $11K
2026-03-16 CheckoutPool Access Control Improper Access Control Polygon $86K
2026-01-07 Polycule Frontend & Infrastructure Key Leaked via Infrastructure Polygon $230K
2025-11-11 Polymarket Social Engineering Phishing Polygon, Ethereum $500K
2025-11-03 Balancer V2 Token & Share Accounting Rounding Error Ethereum, Arbitrum, Base, Polygon, Sonic, Optimism $128.0M
2025-08-14 BtcTurk Key Compromise Hot Wallet Key Compromised Ethereum, Avalanche, Arbitrum, Base, Optimism, Mantle, Polygon $48.0M
2025-06-18 Nobitex Social Engineering Malware Tron, Ethereum, BSC, Avalanche, Arbitrum, Polygon, Bitcoin $82.0M
2025-05-08 BitoPro Frontend & Infrastructure Key Leaked via Infrastructure Ethereum, Tron, Solana, Polygon $11.5M
2025-04-01 Zapper Frontend & Infrastructure DNS Hijack Ethereum, Arbitrum, Optimism, Polygon, Base $0
2025-01-23 Phemex Key Compromise Hot Wallet Key Compromised Ethereum, Solana, XRPL, Bitcoin, BSC, Sui, Base, Tron, Arbitrum, Avalanche, Polygon, Optimism, zkSync Era $85.0M
2024-12-16 BTC24H Access Control Improper Access Control Polygon $86K
2024-10-24 Cryptobottle Oracle Manipulation Spot Price Manipulation Polygon $490K
2024-09-10 Indodax Frontend & Infrastructure Key Leaked via Infrastructure Ethereum, Polygon, Optimism $25.2M
2024-04-23 Magpie Protocol Input Validation Missing Input Validation Ethereum, Polygon, BSC, Blast, Avalanche, Arbitrum, Optimism, Base, zkSync Era, Polygon zkEVM $129K
2024-02-28 Smoofs Reentrancy Reentrancy Polygon $0
2024-01-23 Gamee Frontend & Infrastructure Key Leaked via Infrastructure Polygon $7.0M
2023-12-25 Telcoin Access Control Uninitialized Proxy Polygon $1.3M
2023-11-22 KyberSwap Elastic Token & Share Accounting Rounding Error Ethereum, Base, Polygon, Optimism, Arbitrum $48.0M
2023-09-12 CoinEx Key Compromise Hot Wallet Key Compromised Ethereum, BSC, Bitcoin, Tron, Kadena, Solana, Dagger, XRPL, BitcoinCash, Polygon, Stellar, Arbitrum $55.0M
2023-09-04 Stake.com Key Compromise Hot Wallet Key Compromised Ethereum, BSC, Polygon $41.3M
2023-07-11 Libertify Reentrancy Reentrancy Ethereum, Polygon $230
2023-07-02 Poly Network Bridge & Cross-Chain Forged Proof Ethereum, BSC, Polygon $5.0M
2023-06-15 Hashflow Access Control Token Approval Abuse Ethereum, Arbitrum, Avalanche, BSC, Polygon $605K
2023-05-23 LunaFi Protocol Logic Reward Logic Flaw Polygon $35K
2023-04-28 0vix Oracle Manipulation Spot Price Manipulation Polygon $2.0M
2023-02-01 BonqDAO Oracle Manipulation Oracle Misconfiguration Polygon $1.8M
2023-01-17 Midas Capital Reentrancy Reentrancy Polygon $660K
2023-01-11 Roe Finance Oracle Manipulation Spot Price Manipulation Ethereum, Polygon $80K
2022-12-26 Amun Access Control Improper Access Control Polygon $300K
2022-10-24 QuickSwap Market Oracle Manipulation Spot Price Manipulation Polygon $220K
2022-09-01 KyberSwap Classic Frontend & Infrastructure CDN Compromise Polygon $265K
2022-08-10 Blur Finance Rugpull Exit Scam BSC, Polygon $600K
2022-08-08 Dragoma Rugpull Admin Drain Polygon $3.5M
2022-07-16 Impermax Key Compromise Private Key Compromised Ethereum, Polygon $9.0M
2022-07-12 Citizen Finance Key Compromise Private Key Compromised BSC, Polygon $94K
2022-06-07 Equalizer Exchange Protocol Logic Withdrawal Logic Flaw Ethereum, BSC, Polygon, Optimism $50K
2022-05-14 Quickswap V3 Frontend & Infrastructure DNS Hijack Polygon $108K
2022-02-08 Superfluid Input Validation Missing Input Validation Polygon $8.7M
2021-12-13 Vulcan Forged Key Compromise Hot Wallet Key Compromised Ethereum, Polygon $140.0M
2021-12-11 AscenDEX Key Compromise Hot Wallet Key Compromised Ethereum, BSC, Polygon $77.0M
2021-12-03 Polygon Access Control Improper Access Control Polygon $2.0M
2021-11-30 MonoX Protocol Logic Swap Logic Flaw Ethereum, Polygon $31.4M
2021-11-05 Ooki Social Engineering Phishing Polygon, BSC $55.0M
2021-09-03 Siren Reentrancy Reentrancy Polygon $3.5M
2021-08-10 Poly Network Access Control Improper Access Control Ethereum, BSC, Polygon $611.0M
2021-07-28 PolyYeld Finance Token & Share Accounting Infinite Mint Polygon $250K
2021-06-28 Safe Dollar Protocol Logic Reward Logic Flaw Polygon $248K
2021-06-20 Polydex Reentrancy Reentrancy Polygon $500K
2021-04-19 EasyFi Social Engineering Malware Polygon $59.0M
2021-03-16 Iron Finance Token & Share Accounting Incorrect Share Accounting Polygon $170K

Source: DefiLlama, retrieved 3 October 2026, under its open methodology. Figures are a dated snapshot, not a live feed.