# Key Mismanagement Drives Latest Round of Eight-Figure DeFi Thefts

A private-key compromise at Humanity Protocol and a signing-code flaw at SecondFi show that operational security, not just smart-contract bugs, keeps causing losses at protocols.

- Published: 2026-07-05T10:32:37.070Z
- Canonical: https://polylog.news/crypto/2026-07-05/key-mismanagement-drives-latest-round-of-eight-figure-defi-t
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Rekt News](https://www.rekt.news/), [CoinDesk](https://www.coindesk.com/tech/2026/06/09/humanity-s-usd36-million-exploit-happened-because-a-multisig-wallet-lived-on-one-laptop), [CoinDesk](https://www.coindesk.com/tech/2026/06/09/humanity-protocol-token-crashes-more-than-80-after-a-usd32-million-private-key-hack)

The recent series of exploits tracked by Rekt News has been dominated by failures of key handling rather than novel contract logic. At Humanity Protocol, an attacker stole an estimated $36 million after compromising an employee laptop that…

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