GDAC

Wallet Stolen

Estimated loss

$13.00M

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

South Korean cryptocurrency exchange GDAC said on its official website that it was hacked and lost nearly $13 million. On April 9, the hackers moved nearly $13 million, or 23 percent of their total custody assets, from the GDAC hot wallet to an unidentified wallet. Hackers stole nearly 61 bitcoins (BTC), 350.5 ethers (ETH), 10 million wemix tokens (WEMIX), and 220,000 USDT. Attack method (per SlowMist): Wallet Stolen. Reported loss: $ 13,000,000.

Primary source

https://support.gdac.com/hc/ko/articles/17389345782041--%EA%B8%B4%EA%B8%89%EA%B3%B5%EC%A7%80-%EC%9E%85%EC%B6%9C%EA%B8%88-%EC%84%9C%EB%B9%84%EC%8A%A4-% ↗

Sourced from

slowmist

Technical record