Hack history / 2026 / Hack or exploit
BiFi
Hack or exploit on Oct 17, 2026 · the idle BiFi USDT market freezes its per-block exchange rate and stores the entire 264,059-block inactive gap on the first action, then the interest model charges that full ~36 day gap of deposit interest on every later action in the same block at a utilization rate the attacker sets through permis
ATTACK TX CONFIRMED ON CHAINONE SOURCE · 1 SOURCE
Lost
$166K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,554
among thefts by dollars lost
What happened
No description from DefiLlama or SlowMist; see the sources below.
Details
- Date
- Oct 17, 2026
- Kind
- Hack or exploit
- Method
- the idle BiFi USDT market freezes its per-block exchange rate and stores the entire 264,059-block inactive gap on the first action, then the interest model charges that full ~36 day gap of deposit interest on every later action in the same block at a utilization rate the attacker sets through permis
- How in
- Other
- Target
- not stated
- Chains
- Ethereum
Reported by
- DeFiHackLabs exploit reproduction only
Related incidents
Cite this page
SwanBluechip, "BiFi hack, Oct 17, 2026: $166K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/hteb16412f20/ (data as of 2026-10-31).