Binance $2.5B Hack Reads as Signature Abuse, Not Key Theft

A reported $2.5B Binance hack may trace to a compromised signature system rather than stolen private keys, according to Blockaid's CEO, as flagged by @Cointelegraph. The claimed mechanism is specific: the attacker bundled 50 EIP-7702 authorizations into a single transaction to hijack a Binance wallet. Binance has not confirmed the method, and that gap is the whole story right now.

What mattered: The EIP-7702 vector, if accurate, reframes the loss as an authorization and delegation failure rather than key compromise, which changes what other wallet holders should worry about. What did not: Binance's confirmation. Until the exchange verifies the method, the EIP-7702 account remains an unconfirmed claim from one security vendor's CEO. Worth watching: Whether Binance or an independent party corroborates the 50-authorization bundle, and whether BTC's 4.09% decline stabilizes or extends.

The claim moved faster than the confirmation

The story arrived with a mechanism attached, which is unusual for an incident this size. @Cointelegraph reports Blockaid's CEO attributing the $2.5B loss to a compromised signature system, with 50 EIP-7702 authorizations bundled into one transaction. That is a precise, testable assertion. The counterpart is equally precise: Binance has not confirmed the method. So we have a named security firm's assessment and a silent counterparty, published at 00:25 UTC on 2026-10-30, with no on-chain confirmation in hand. The read is not that the claim is wrong. It is that a $2.5B figure plus an unconfirmed vector is not yet a settled fact set. EIP-7702 authorizations delegate control of an account to a contract, so if the bundling claim holds, the failure mode sits in signing flows rather than seed storage. That distinction matters for every wallet that supports delegated accounts.

The market repriced before the mechanism was verified

Price action at publication is consistent with a risk-off response, not with a forensic conclusion. BTC traded at $76,625, down 4.09% over 24 hours, with a market cap of $1,540.47B and well below the $126,080 all-time high set on 2025-10-06. Derivatives show longs still paying: funding on Hyperliquid ran +0.00125% per hour, about 10.95% annualized, with open interest at $3,292M. Crypto Fear & Greed stood at 30, in Fear. That mix is a market leaning defensive while leverage stays positioned for recovery, which is a fragile combination if the Binance story gets worse before it gets clearer. None of these numbers validate the EIP-7702 claim. They only show how much of the event is already in price.

Bottom line

This is a credible security vendor's account of a signature-layer failure at the largest exchange, attached to a $2.5B figure, with the exchange itself silent. It is not a confirmed post-mortem, and the mechanism should be treated as a leading hypothesis rather than fact. The read changes if Binance or an independent party confirms the 50-authorization EIP-7702 bundle, or equally if BTC's funding and open interest unwind sharply from here rather than holding.