Monitoring

Balancer V2

CRITICALEthereum, Arbitrum, Base, Polygon, Sonic, Optimism·Rounding Error·#32 all-time
$128.0M stolenMonday, November 3, 2025 · 356 days ago

Corpus updated 2026-10-25

What happened

  • Balancer V2, a defi protocol, lost $128.0M on November 3, 2025.

  • The 3rd largest of the 148 incidents recorded in 2025: 4.7% of the $2.72B lost to hacks that year.

  • This is the 3rd recorded incident at Balancer V2; the previous one was in September 2023, $238K.

  • Rounding Error is behind 17 recorded incidents totalling $197.3M; this is the largest of them.

Cite this record

Monitoring Room, "Balancer V2 hack (2025) — $128.0M stolen", incident record, data: DefiLlama hacks dataset, as of 2026-10-25 08:36 UTC. https://monitoringroom.com/situation/crypto-hack/balancer-v2-2025

Other recorded incidents at Balancer V2

DefiLlama records 3 separate incidents under this name.

Balancer V2 — 2023
Ethereum$800K
Balancer V2 — 2023
Ethereum$238K

Nearby in the record

Garden
10/30/2025$11.4M
Moonwell Lending
11/4/2025$1.0M
402bridge
10/27/2025$18K
DIMO
11/7/2025$40K
DoodiPals
10/21/2025$171K
DRLVaultV3
11/10/2025$100K
← All incidents

Source: DefiLlama · 1317 recorded incidents · data as of 2026-10-25 08:36 UTC