Stale-approval exposure on deprecated router

Beefy Finance's assessment for RD-F-168 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Beefy operates allowance.beefy.finance to help users revoke stale token approvals to deprecated Beefy routers and strategy contracts — existence of tool implies acknowledged stale-approval surface. 2023 Multichain migration deprecated multiple bridge contracts. Old BIFI token on BSC (0xCa3F508B8e4Dd382eE878A314789373D80A5190A) is deprecated but still on-chain. Multiple chains have deprecated legacy strategy contracts. Active monitoring and revocation tooling is a positive, but the hygiene gap exists.

Sources #

URL
https://app.beefy.com/revokeretrieved 2026-05-16

Methodology #

Count the number of active user approvals (ERC-20 `allowance`) to deprecated router or protocol contracts.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol beefy factor RD-F-168 score yellow collected_at 2026-05-16 13:10:30