Bondly Finance

Private Key Leakage

Estimated loss

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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

The digital collectibles market platform Bondly Finance released an analysis report on the previous attack. Bondly Finance believes that the attacker obtained access to the password account belonging to Bondly CEO Brandon Smith through a carefully planned strategy. The password account contains the assistance of his hardware wallet. Recalling the phrase to restore the phrase, after copying, allowed the attacker to access the BONDLY smart contract, and the company wallet that was also leaked, resulting in the minting of 373 million BONDLY tokens. Attack method (per SlowMist): Private Key Leakage. Reported loss: 373,000,000 BONDLY.

Primary source

https://bondlyfinance.medium.com/bondly-attack-july-14th-2021-postmortem-beb7cf02e9ba ↗

Sourced from

slowmist

Technical record