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Post Mortem: BiSwap

ID: 17f978a5-d755-5f4b-bbff-89461bdb0f89

STIX ID: report--17f978a5-d755-5f4b-bbff-89461bdb0f89

Feed Name: CertiK Blog

Threat Score
68/100

Date Published: 2024-01-07

Date Updated: 2026-06-11

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On June 30, 2023 the Biswap V3 liquidity migrator (MigratorV3) was exploited for approximately $865,000 due to missing input validation: the attacker migrated victims' V2 LPs to a malicious tick and used a fake V2 pair contract to deceive the migrator and drain V3 liquidity; the vulnerable MigratorV3 contract was not covered by the cited audits.

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