Security · High impactFan score 5 · Tier D2 sources
Blockaid: Binance hackers stole ~$2.5B, or 40% of the $6.3B haul, in a single Ethereum transaction using wallet permissions that cost just $15 to set up (Sidhartha Shukla/Bloomberg)
Techmeme ·
The Brief
- Hackers stole about $6.3 billion from Binance in an October 2026 incident, according to Bloomberg citing Blockaid.
- Blockaid says about $2.5 billion, or roughly 40% of the total, was taken in a single Ethereum transaction.
- The transaction used wallet permissions that reportedly cost $15 to set up.
Why it matters
Valid signatures can grant an attacker wallet authority, so monitoring only transfers and ownership changes may miss this kind of theft. Teams holding user funds need to check what their signing systems are able to approve.
Who’s affected
- Organizations holding user funds
- Teams operating signing systems or wallet permissions
What to do
- Check what your signing systems can approve, including wallet permissions that grant authority over funds
- #crypto-security
- #binance
- #ethereum
- #wallet-permissions
- #signing-systems
Sidhartha Shukla / Bloomberg : Blockaid: Binance hackers stole ~$2.5B, or 40% of the $6.3B haul, in a single Ethereum transaction using wallet permissions that cost just $15 to set up — The hackers who stole $6.3 billion from Binance last week found a way to take 40% of the…
Timeline
Full coverage · 2 sources
- 5h ago ↗
The Trail of Bits Blog
After Binance, check what your signing systems can approve - 10h ago ↗
Techmeme
Blockaid: Binance hackers stole ~$2.5B, or 40% of the $6.3B haul, in a single Ethereum transaction using wallet permissions that cost just $15 to set up (Sidhartha Shukla/Bloomberg)