ChainBleedv0.1 · open intel
← back to feed·PRIVATE-KEY2023-09-01 · 2y ago
Incident · SLOWMIST

Ivan Bianco

Mnemonic Leakage
Estimated loss
$10.0K
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

A Brazilian YouTuber, Ivan Bianco, accidentally leaked the mnemonic of his cryptocurrency wallet during a live stream on his Fraternidade Crypto channel, resulting in the theft of nearly $60,000 worth of cryptocurrency and a batch of NFTs. Fraternidade Crypto has around 34,000 subscribers on YouTube. During the live broadcast, Bianco opened a file recording the mnemonic phrase, which allowed an unknown person to take control of his wallet and steal its funds. Bianco reported the incident to police after missing the funds. He also claimed that an unidentified man contacted him on Discord after the funds were stolen. The anonymous person identified himself as the money thief and expressed regret for his actions before hanging up and leaving. After the call ended, the wallet that stole most of the funds returned a total of approximately $50,000 worth of crypto assets to Bianco. Attack method (per SlowMist): Mnemonic Leakage. Reported loss: $ 10,000.

Primary source
https://cointelegraph.com/news/brazilian-crypto-streamer-loses-50k-by-exposing-private-key
Sourced from
slowmist
Technical record
chain
protocol
Ivan Bianco
bug_class
private-key
date_occurred
2023-09-01
loss_usd
$10,000
source_id
sm:ivan-bianco::2023-09-01
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