VERDICT —OUT OF SCOPE
Root cause is private-key / signer compromise — the on-chain contract behaved exactly as written. No pre-deployment source audit or bytecode review reaches the key-custody perimeter; this is operational-security territory (HSM/MPC hygiene, key rotation, hot-wallet isolation). Bytecode would show nothing wrong.
▰ METHOD
PRIVATE KEY
PRIVATE-KEY
Root cause
Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.
Forensic narrative
BitMart founder and CEO Sheldon Xia tweeted to admit that a large-scale security breach occurred on the platform, and hackers were able to extract assets worth about US$150 million. The affected ETH hot wallet and BSC hot wallet carry a small amount of assets on BitMart, and the other wallets are safe and undamaged. Attack method (per SlowMist): Wallet Stolen. Reported loss: $ 150,000,000.
Sourced from
slowmist
Technical record
- chain
- bsc
- protocol
- BitMart
- bug_class
- private-key
- date_occurred
- 2021-12-05
- loss_usd
- $150,000,000
- source_id
- sm:bitmart::2021-12-05
Related — same bug class· private-key