Blockaid lands $40M in commitments after detecting record Binance hack
What's the deal? Blockchain security firm Blockaid has raised $40 million, Axios reported, days after the company flagged a record $6.3 billion breach at crypto exchange Binance.
Why now? On October 29, Binance's hot wallets were drained of about $6.3 billion across Ethereum, Arbitrum and other chains — the largest crypto theft on record. Blockaid says its system detected the drain under two minutes after the sweep, before any public report.
How the attack worked: The attacker used an EIP-7702 delegation to gain execution control over the "Binance 14" hot wallet, bypassing the exchange's normal approval controls. That let them drain about $2.5 billion in a single transaction, with 10 more wallets emptied within 12 minutes.
What Blockaid does: It sells transaction monitoring and policy controls for exchanges, custodians, and institutions that hold signing keys at scale. After the breach, it flagged the attacker's addresses as malicious and worked with the exchange to help freeze about $3 billion in assets.
Binance has confirmed the incident, estimated the impact at about $6.3 billion, and said it will cover all losses.
What's the endgame? The round builds on a $50 million Series B in February 2025, marking a substantial follow-on. Axios reports commitments rather than a closed round; investors and terms were not available.
What could go wrong? Blockaid's detection claim is the company's own. And the funds the attacker moved into ETH, AVAX, and OP — which cannot be frozen — stayed out of reach.
The signal: A high-profile security failure can sharpen demand for the controls that prevent it. Crypto-security drew capital through 2026, and the Binance breach offers a stark case for why institutions holding signing keys at scale want monitoring before and after a transaction is signed.
Read more: Axios
Image credit: rkztcxab30
