LuBian
HackedInfrastructure · born 2020 · ✝ 2020
A bitcoin mining pool whose wallets were brute-forced for billions.
LuBian was a Bitcoin mining pool whose private keys were generated with a flawed, low-entropy scheme that left funds exposed. In December 2020 attackers brute-forced those keys and swept roughly $3.5B in BTC, in what was later identified as one of the largest crypto thefts ever.
- Peak
- ~$3.5B stolen
- Cause
- Hacked
- Year of death
- 2020
☠️ Cause of death
Weak, predictable private-key generation let attackers brute-force the wallets and drain the pool's Bitcoin holdings.
📓 Lessons left behind
- —Key generation needs true, audited cryptographic entropy.
- —Custody at scale demands multisig and cold storage.
- —A single weak RNG can expose billions instantly.
🌱 The idea that survived
Secure key generation
Reinforced the need for hardened, high-entropy key generation and multisig custody for large holdings.
#custody#private-key#bitcoin#mining