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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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

20 matching records · 2025-12 selected · Clear selection

Full incident database
DateIncident and attack methodChainReported lossEvidence
30 Dec 2025Unleash ProtocolMultisig Governance Hack / Access Control / Private Key Compromisedstory$3.9MSource
28 Dec 2025MSCSTAtomic Sandwich Attack / Improper Access ControlBNB Chain$130KSource
27 Dec 2025Flow NetworkOtherNot recorded$3.9MSource
27 Dec 2025Flowmint-and-dump Hack / Infinite Mintflow$3.9MSource
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 attackNot recorded$200KSource
04 Dec 2025US Permissionless Dollar"CPIMP" proxy front-run / Proxy Upgrade HijackEthereum$1.0MSource
02 Dec 2025Goldfinch FinanceOther / Token Approval AbuseEthereum$330KSource

About these numbers

Updated 15 Sep 2026, 22:42 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?bucket=2025-12&page=1

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