Hack history / 2021 / Hack or exploit
BXH
Hack or exploit on Oct 30, 2021 · Private Key Compromised
SOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$139M
dollars at the time
Returned
none listed
as the sources state it
Rank
#42
among thefts by dollars lost
What happened
Attacker gained access to BXH's administrative private key, allowing digital signature of a transaction transferring $139 million in tokens directly to the attacker's account. The details suggest an insider or compromised system with access to the admin key storage, making this likely an inside job or successful targeted malware infection.
Details
- Date
- Oct 30, 2021
- Kind
- Hack or exploit
- Method
- Private Key Compromised
- How in
- Keys, accounts and infrastructure
- Target
- DeFi protocol
- Chains
- BNB Chain
Related incidents
Cite this page
SwanBluechip, "BXH hack, Oct 30, 2021: $139M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht330ffff9bd/ (data as of 2026-10-31).