Leaderboard
730All-time rank
F
Flexcoin
Mar 2, 2014
$600K
Lost
$600K
Recovered
$0
Net loss
$600K
Unrecovered0% recovered
Flexcoin's exchange had a race condition in its transfer code. An attacker sent thousands of simultaneous transfer requests between user accounts, moving coins from one account to another until the sending account was overdrawn before balances were updated, stealing 896 BTC.
- Target
- CEX
- Classification
- Protocol Logic
- Technique
- Withdrawal Logic Flaw
- Attribution
- Unknown
- Chains
Bitcoin
Event timeline
- Mar 2, 2014Exploit executed — $600K drained via withdrawal logic flaw
- Attributed to Unknown
- Recovery status Unrecovered 0%