bot spotted the would-be attacker's transaction and paid a charge to perform a comparable transaction ahead of them, front-running the attacker.
It was discovered that Vyper, a third-party programming language for Ethereum smart contracts, was responsible for the flaw. Vyper said that the compiler for the programming language had failed. As re-entry guards were built into the projects' code and were supposed to protect against re-entry attacks, this rendered them inoperable.Related Articles
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