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Monthly · Issue 2 · 2026-08-01 – 2026-08-31

Crypto security incidents · monthly · 2026-08

From 2026-08-01 to 2026-08-31, 48 crypto security incidents were publicly reported, with about $255.5M lost; the previous month had 38 and $254.4M, a change of +0% in losses. The largest was Tectonic (2026-08-30, about $124.5M). By technique, "Token & Share Accounting" accounted for the most losses: 8 incidents, $185.8M. There were no phishing, frontend-hijack or rugpull incidents; the rest happened inside wallets and contracts and call for key management and code audits.

Incidents

48

previous 38

Reported loss

$255.5M

previous $254.4M

Pre-payment check partly applies

0

$0

Largest incidents

DateIncidentTechniqueLoss
2026-08-30TectonicToken & Share Accounting$124.5M
2026-08-24NesaToken & Share Accounting$50.0M
2026-08-05KITE FoundationKey Compromise$13.3M
2026-08-22KiiChainToken & Share Accounting$9.7M
2026-08-27Moonwell LendingOracle Manipulation$8.7M

By technique

Token & Share Accounting8$185.8M
Key Compromise5$18.3M
Access Control9$16.1M
Oracle Manipulation10$11.4M
Protocol Logic7$10.6M
Governance2$8.5M
Bridge & Cross-Chain5$4.7M
Input Validation2$30K

By chain

Cronos1$124.5M
Nesa1$50.0M
Ethereum12$31.9M
KiiChain1$9.7M
Base4$9.6M
Tron1$7.9M

Data: the public DefiLlama incident dataset. This report restates public reports and is not OceanAlt's judgment of any party. To report an error, email business@oceanalt.com.