VERDICT —OUT OF SCOPE
Root cause is phishing — victims signed malicious transactions or approvals off-protocol. Contract logic was not the failure surface; user-side wallet hygiene was. Pre-deployment audit cannot catch this class.
▰ METHOD
PHISHING
PHISHING
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
Binance has discovered a large scale security breach today, May 7, 2019 at 17:15:24 (UTC). Hackers were able to obtain a large number of user API keys, 2FA codes, and potentially other info. The hackers used a variety of techniques, including phishing, viruses and other attacks. And the hackers were able to withdraw 7000 BTC. Link: https://binance.zendesk.com/hc/en-us/articles/360028031711-Binance-Security-Breach-Update Attack method (per SlowMist): Wallet Stolen. Reported loss: 7,074 BTC.
Primary source
https://binance.zendesk.com/hc/en-us/articles/360028031711-Binance-Security-Breach-Update ↗Sourced from
slowmist
Technical record
- chain
- —
- protocol
- Binance
- bug_class
- phishing
- date_occurred
- 2019-05-08
- loss_usd
- —
- source_id
- sm:binance::2019-05-08
Related — same bug class· phishing