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MEDIUMEthereum·Arithmetic Error·#591 all-time

NowSwap

$1.1M stolenWednesday, September 15, 2021 · 1821 days ago

Corpus updated 2026-09-10

Situation Summary

9/15/2021 — EXPLOIT DETECTED

$1.1M drained from NowSwap on Ethereum.

TECHNIQUE: ARITHMETIC ERROR

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Source: DefiLlama · 1262 recorded incidents · data as of 2026-09-10 05:04 UTC