# Security roundup: a token burn drained $201,000 from a CrowdRingCircle pool, and post-mortems detail the unbacked mints at Liquid and Nomic

DeFiHackLabs published reproductions of three exploits on BNB Chain and Optimism, while rekt.news analyzed two Bitcoin-linked systems where a software flaw let attackers create unbacked bitcoin tokens, one of them worth $320 million.

- Published: 2026-10-06T05:32:21.128Z
- Canonical: https://polylog.news/crypto/2026-10-06/security-roundup-a-token-burn-drained-201-000-from-a-crowdri
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/2aaeccf7ad128629a003166b8ec12cc46c296b0a), [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/0506ed15c62b71df71c5c3f3869f83dbe74ee2c0), [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/3684a1c36da3ad2dab35eb628bc25f5170185eea), [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/f2e994361cf767b0c2665130ce1ff35712c75666), [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/0200ce8af03a0f9bf4ce235f4ddb9d84773fae29), [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/53a595d1db814808941fa02b8de6644d4142f28c), [Rekt News (Liquid Network)](https://www.rekt.news/), [AMLCrypto](https://amlcrypto.io/blog/vzlom-crowdringcircle), [TRM Labs](https://www.trmlabs.com/resources/blog/2026s-biggest-hack-to-date-attackers-drained-usd-319-million-in-bitcoin-from-liquid-network-then-returned-85-of-funds)

DeFiHackLabs, the open-source repository that reproduces on-chain attacks as runnable tests, added proofs of concept for three exploits this week. Rekt.news, meanwhile, carries post-mortems on the two Bitcoin-linked incidents of September.…

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