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
Bitcoin DeFi application ALEX Lab was drained of over $4.3 million in various tokens after a suspected private key compromise attacked its bridging service. Hackers transferred over $300,000 USD worth of BTC, $3.3 million USD worth of stablecoins, and $75,000 USD worth of Sugar Kingdom (SKO) tokens. Attack method (per SlowMist): Private Key Leakage. Reported loss: $ 4,300,000.
Sourced from
slowmist
Technical record
- chain
- bitcoin
- protocol
- ALEX Lab
- bug_class
- private-key
- date_occurred
- 2024-05-15
- loss_usd
- $4,300,000
- source_id
- sm:alex-lab::2024-05-15
Related — same bug class· private-key