Web3 Security Trends

Updated 15 Sep 2026About these numbers
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01 Sep 2025–31 Aug 2026compared with 01 Sep 2024–31 Aug 2025
Reported loss$2.72B ↓ 71% vs prior period 347/354 loss amounts reported
Reported attacks354 ↑ 55% vs prior period
Median incident loss$679K ↑ 3% vs prior period

Attacks and losses over time

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Reported loss and attack counts from 2025-09-01 to 2026-08-31.Reported loss (USD)Attack count $0 $500M $1B 0 25 50 Sep 2025: $176.5M reported loss; 22 attacksSep 2025Oct 2025: $51.6M reported loss; 15 attacksOct 2025Nov 2025: $288.4M reported loss; 18 attacksNov 2025Dec 2025: $79.5M reported loss; 20 attacksDec 2025Jan 2026: $405.4M reported loss; 30 attacksJan 2026Feb 2026: $36.8M reported loss; 14 attacksFeb 2026Mar 2026: $77.8M reported loss; 30 attacksMar 2026Apr 2026: $951.7M reported loss; 39 attacksApr 2026May 2026: $112.5M reported loss; 50 attacksMay 2026Jun 2026: $93.9M reported loss; 41 attacksJun 2026Jul 2026: $299.4M reported loss; 42 attacksJul 2026Aug 2026: $145.2M reported loss; 33 attacksAug 2026

Top 5 incidents: 47% of loss

View chart as a table
PeriodReported lossAttacksKnown amounts
Sep 2025$176.5M2222 of 22
Oct 2025$51.6M1515 of 15
Nov 2025$288.4M1818 of 18
Dec 2025$79.5M2020 of 20
Jan 2026$405.4M3030 of 30
Feb 2026$36.8M1414 of 14
Mar 2026$77.8M3028 of 30
Apr 2026$951.7M3938 of 39
May 2026$112.5M5050 of 50
Jun 2026$93.9M4141 of 41
Jul 2026$299.4M4242 of 42
Aug 2026$145.2M3329 of 33

What changed

  1. Compared with the previous period, reported loss fell by $6.50B while incident count rose by 125.

    See incidents

  2. Drift Trade drove 11% of known reported loss in this period.

    Open incidentSource

  3. Incorrect Share Accounting was the most frequently recorded attack method, appearing in 14 incidents.

    Open incidentSource

Attack methods

  1. Incorrect Share Accounting14
  2. Access Control13
  3. Spot Price Manipulation13
  4. Improper Access Control11
  5. Phishing7
  6. Forged Proof6
  7. Oracle Issue6
  8. Private Key Compromised6
  1. Phishing$372.9M
  2. Access Control$352.0M
  3. Compromised Admin + Fake Token Price Manipulation / Proxy Upgrade Hijack$295.0M
  4. Access Control / Cross-Chain Message Spoofing$293.0M
  5. Other / Weak Key Generation$130.0M
  6. Composable Stable Pools Exploit / Access Control / Rounding Error$128.0M
  7. Oracle Issue / Donation Attack$75.0M
  8. Delegatecall Exploit / Access Control / Delegatecall Hijack$48.0M

Affected sectors

200 uncategorized incidents excluded

  1. DeFi applications115
  2. Other21
  3. Bridges12
  4. Centralized services4
  5. Wallets2
  1. DeFi applications$788.7M
  2. Other$167.5M
  3. Bridges$60.1M
  4. Centralized services$43.5M
  5. Wallets$8.6M

Affected chains

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

  1. Ethereum102
  2. BNB Chain61
  3. Base35
  4. Arbitrum33
  5. Solana20
  6. Polygon14
  7. Bitcoin7
  8. Sui6
  9. Avalanche6
  10. Optimism4
  1. Ethereum$849.4M
  2. Arbitrum$555.7M
  3. Solana$474.1M
  4. Base$204.8M
  5. Bitcoin$176.5M
  6. Polygon$134.2M
  7. Optimism$130.2M
  8. Sonic$128.1M
  9. BNB Chain$96.4M
  10. Cronos$75.0M

Incidents behind this view

354 matching records

Full incident database
DateIncident and attack methodChainReported lossEvidence
31 Aug 2026AquiferOtherSolana$2.5MSource
30 Aug 2026Tectonic ProtocolOracle Issue / Donation AttackCronos$75.0MSource
28 Aug 2026AviciSignature Validation / Authorization FlawSolana$501KSource
27 Aug 2026CCCSwap Logic FlawBNB Chain$117KSource
27 Aug 2026Moonwell LendingSpot Price Manipulation / Oracle IssueBase$8.7MSource
25 Aug 2026CometDEXIncorrect Share AccountingStellar$718KSource
25 Aug 2026EnjinUnprotected Initialization and Ownership TakeoverEthereum$162KSource
25 Aug 2026FH TokenReserve DesynchronizationBNB Chain$20KSource
23 Aug 2026warp.greenBridge Logic Flawchia, Ethereum$93KSource
23 Aug 2026Term LabsMalicious ProposalEthereum$8.5MSource
23 Aug 2026Arrakis V1Spot Price ManipulationEthereum$7KSource
22 Aug 2026TACInteger Underflow / OverflowTACUnknownSource
21 Aug 2026MANTRA ChainUnsigned Integer Underflowmantra$3.6MSource
21 Aug 2026The SandboxAccess Control / Improper Access ControlBase, BNB Chain, Ethereum$675KSource
19 Aug 2026BounceBitImproper Access Controlbouncebit$3.0MSource
19 Aug 2026AllbridgeCross-Chain Message Validation FlawBase$191KSource
18 Aug 2026Maya ProtocolOther / Withdrawal Logic Flawmayachain$1.7MSource
15 Aug 2026Fox MarketSpot Price Manipulation / Flash Loan AttackBNB Chain$120KSource
13 Aug 2026Whale Wallet DrainPhishingNot recorded$25.6MSource
12 Aug 2026HarmonyOtherNot recorded$300KSource
10 Aug 2026CoinsbuyAccess Control / Improper Access ControlEthereum, Tron$8.1MSource
09 Aug 2026USMFlash-Loan-Funded Accounting ExploitEthereum$136KSource
09 Aug 2026CoreumDeposit Verification Flawcoreum, xrpl$200KSource
08 Aug 2026OraichainEVM Cross-Chain Unauthorized Mintoraichain$1.0MSource
08 Aug 2026Atomic GreenSignature ReplayArbitrum$30KSource

About these numbers

Updated 15 Sep 2026, 21:45 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 354 incidents in this view have comparable reviewed accounting, totaling $1.9M.

Cite this view

Smart Contract Hacking (SCH), “Web3 Security Trends: 2025-09-01 to 2026-08-31,” method 2026-09-15.1, view 4877e750d4f5, accessed 15 September 2026. https://smartcontractshacking.com/tools/web3-security-trends

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