Web3 Security Trends

Updated 31 Oct 2026About these numbers
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01 Oct 2025–30 Sep 2026compared with 01 Oct 2024–30 Sep 2025
Reported loss$2.92B ↓ 68% vs prior period 338/356 loss amounts reported
Reported attacks356 ↑ 73% vs prior period
Median incident loss$459K ↓ 30% vs prior period
Largest incident$387.0M13% of known lossBitget

Attacks and losses over time

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View chart as a table
PeriodReported lossAttacksKnown amounts
Oct 2025$47.9M1414 of 14
Nov 2025$275.7M1616 of 16
Dec 2025$75.6M1919 of 19
Jan 2026$390.2M2424 of 24
Feb 2026$24.0M1212 of 12
Mar 2026$42.3M2623 of 26
Apr 2026$649.6M3534 of 35
May 2026$79.7M4442 of 44
Jun 2026$80.4M3636 of 36
Jul 2026$250.3M4140 of 41
Aug 2026$260.9M4740 of 47
Sep 2026$742.6M4238 of 42

What changed

  1. Compared with the previous period, reported loss fell by $6.09B while incident count rose by 150.

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  2. Bitget drove 13% of known reported loss in this period.

    Open incidentSource
  3. Spot Price Manipulation was the most frequently recorded attack method, appearing in 16 incidents.

    Open incident

Attack methods

  1. Spot Price Manipulation16
  2. Incorrect Share Accounting12
  3. Improper Access Control11
  4. Phishing8
  5. Private Key Compromised8
  6. Access Control7
  7. Arithmetic Error6
  8. Swap Logic Flaw6
  1. Access Control / Hot Wallet Key Compromised$403.7M
  2. Phishing$360.5M
  3. Other / Unbacked Cross-Chain Mint$323.1M
  4. Access Control / Compromised Admin + Fake Token Price Manipulation / Proxy Upgrade Hijack$295.0M
  5. Access Control / Cross-Chain Message Spoofing$293.0M
  6. Composable Stable Pools Exploit / Access Control / Rounding Error$128.0M
  7. Oracle Issue / Donation Attack$124.5M
  8. Other / Weak Key Generation$116.0M

Affected sectors

207 uncategorized incidents excluded

  1. DeFi applications112
  2. Other17
  3. Bridges14
  4. Centralized services4
  5. Wallets2
  1. DeFi applications$714.0M
  2. Centralized services$389.0M
  3. Other$108.1M
  4. Bridges$59.5M
  5. Wallets$8.6M

Affected chains

38 unnamed-chain incidents excluded. Multi-chain counts and losses overlap.

  1. Ethereum119
  2. BNB Chain64
  3. Base37
  4. Arbitrum29
  5. Solana19
  6. Polygon17
  7. Tron7
  8. Bitcoin7
  9. Sui6
  10. Optimism5
  1. Ethereum$1.13B
  2. Arbitrum$503.4M
  3. Tron$428.0M
  4. Solana$424.0M
  5. zcash$387.0M
  6. XRP$387.0M
  7. liquid$320.0M
  8. Base$203.0M
  9. Bitcoin$144.9M
  10. Polygon$136.0M

Incidents behind this view

356 matching records

Full incident database
DateIncident and attack methodChainReported lossEvidence
10 Jan 2026Social Engineering ScamPhishingNot recorded$282.0MSource
08 Jan 2026TruebitBonding Curve Exploit / Other / Arithmetic ErrorEthereum$26.4MSource
07 Jan 2026PolyculeKey Leaked via Infrastructure / OtherPolygon$230KSource
06 Jan 2026IPOR FusionEIP-7702 Delegation Exploit / Access Control / Arbitrary External CallArbitrum$336KSource
05 Jan 2026TMXOther / Mint & Stake Loop Exploit / Arithmetic Error / Deployer Key CompromisedArbitrum$1.4MSource
03 Jan 2026ValinityOracle IssueNot recorded$63KSource
01 Jan 2026PRXVTSybil Attack with CREATE2 Addresses / Staking Logic FlawBase$97KSource
30 Dec 2025Unleash ProtocolMultisig Governance Hack / Access Control / Private Key Compromisedstory$3.9MSource
29 Dec 2025MSCSTAtomic Sandwich Attack / Improper Access ControlBNB Chain$130KSource
27 Dec 2025Flow NetworkOther / mint-and-dump Hack / Infinite Mintflow$3.9MSource
26 Dec 2025FilDASpot Price Manipulationelastos$167K
25 Dec 2025Trust WalletPrivate Key Compromised (Supply Chain Attack) / Access Control / Supply Chain AttackBitcoin, Ethereum, Solana$8.5MSource
20 Dec 2025Address Poisoning AttackPhishingNot recorded$50.0MSource
18 Dec 2025Rari CapitalUninitialized Proxy Hijack / Uninitialized ProxyEthereum$2.0MSource
16 Dec 2025Yearn Financemisconfigured Fulcrum sUSD strategy / Flash Loan Attack / Donation AttackEthereum$300KSource
16 Dec 2025FutureSwapFlashloan Governance AttackEthereum$270KSource
14 Dec 2025Mars PerpsThin-Market Skew Exploit / Funding Rate Arbitrageneutron$960KSource
12 Dec 2025ZerobasePhishing / Token Approval AbuseBNB Chain$250KSource
12 Dec 2025RibbonPrivate Key Compromised / Improper Access ControlEthereum$2.7MSource
11 Dec 20250G LabsemergencyWithdraw Function Exploit / Withdrawal Logic Flaw0g$516KSource
10 Dec 2025MUBARAPhishingNot recorded$55KSource
08 Dec 2025Eden NetworkAccess ControlNot recorded$54KSource
08 Dec 2025DMiOtherNot recorded$124KSource
06 Dec 2025WaveXOtherNot recorded$430KSource
04 Dec 2025USPDCPIMP deployment attackEthereum$1.0MSource

About these numbers

Updated 31 Oct 2026, 12:59 UTC

Incident selection

This dashboard covers reported incidents, not every attack or the relative safety of a chain. Each verified canonical incident is counted once. Unverified, rejected, merged duplicate, pending-review, and future-dated records are excluded. Late reports and corrections can change recent periods.

Loss and outliers

Reported loss sums known positive USD amounts. Missing amounts stay unknown, not zero. Median incident loss uses only incidents with a known amount. “Exclude the largest incident” removes the largest known-loss event from both the selected and comparison periods.

Missing classifications

Sector and chain labels come from the incident record. Uncategorized incidents are excluded from sector charts; incidents without a named chain are excluded from chain charts. A multi-chain incident appears under each named chain, so those counts overlap.

Limitations

Reliable malicious-actor attribution is not consistently available, so this page does not rank actor groups. Timing alone cannot show that AI caused an attack, so there is no AI-involvement metric. Confirmed returned funds are too sparsely documented for a recovery trend: 2 of 356 incidents in this view have comparable reviewed accounting, totaling $1.9M.

Cite this view

Smart Contract Hacking (SCH), “Web3 Security Trends: 2025-10-01 to 2026-09-30,” method 2026-09-15.1, view d3093a3f2713, accessed 31 October 2026. https://smartcontractshacking.com/tools/web3-security-trends?page=13

Live view. Figures may change as incident records are updated.