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Weekly · Issue 5 · 2026-08-24 – 2026-08-30

Crypto security incidents · weekly · 2026-W35

From 2026-08-24 to 2026-08-30, 16 crypto security incidents were publicly reported, with about $189.7M lost; the previous week had 11 and $31.4M, a change of +505% in losses. The largest was Tectonic (2026-08-30, about $124.5M). By technique, "Token & Share Accounting" accounted for the most losses: 5 incidents, $175.5M. 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

16

previous 11

Reported loss

$189.7M

previous $31.4M

Pre-payment check partly applies

0

$0

Largest incidents

DateIncidentTechniqueLoss
2026-08-30TectonicToken & Share Accounting$124.5M
2026-08-24NesaToken & Share Accounting$50.0M
2026-08-27Moonwell LendingOracle Manipulation$8.7M
2026-08-28Fogo FoundationKey Compromise$3.0M
2026-08-28VirtueOracle Manipulation$895K

By technique

Token & Share Accounting5$175.5M
Oracle Manipulation4$9.6M
Key Compromise1$3.0M
Protocol Logic5$1.4M
Access Control1$162K

By chain

Cronos1$124.5M
Nesa1$50.0M
Base1$8.7M
Fogo1$3.0M
Ethereum3$1.2M
Iota1$895K

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.