Ethereum developers confirmed the Glamsterdam upgrade will activate on the Sepolia testnet on October 6, but warned that cheap test ether could allow malicious builders to exploit block auctions and potentially stall the chain during testing.
The endowment built from unclaimed 2016 DAO funds is launching a second funding round worth $1.8 million to support Ethereum's security initiatives, asking companies that benefit from Ethereum security work to contribute. The move comes as 2026's first half has already set a record for crypto hacks.
A trading bot named Yoink intercepted approximately 2,900 rsETH worth $7.8 million during an exploit targeting a Gnosis Safe wallet on Ethereum. The bot's transaction beat the original attacker's into the same block, effectively hijacking the heist.
A collaboration between Google Quantum AI, the Ethereum Foundation, and Stanford has published research showing optimized quantum circuits that reduce the resources needed for a key operation in potential quantum attacks on Bitcoin and Ethereum's cryptography, requiring only 1,151 logical qubits compared to previous estimates.
A crowdsourced challenge of over 100 researchers and AI agents reduced the quantum resource benchmark for a key operation in attacking Bitcoin and Ethereum by 86% in two months, requiring 1,151 logical qubits and 1.30 million T-gates.
The Ethereum Foundation has made quantum resistance its top priority, establishing December 2029 as a fixed deadline to protect the network's execution, consensus, and data layers before quantum computers could break current cryptography. The timeline is now constraining which features can be included in upcoming upgrades, including the Hegotá upgrade.
The Ethereum Foundation has made quantum resistance its top priority, establishing December 2029 as a fixed deadline to protect the network's execution, consensus, and data layers before quantum computers could break current cryptography. The timeline is now constraining which features can be included in upcoming upgrades, including the Hegotá upgrade.
Ethereum researchers submitted a draft proposal to overhaul the network's validator deposit contract to accept variable-length cryptographic keys, marking the first step toward protecting the staking system's $104 billion in locked ETH from potential quantum computer attacks.
An attacker exploited Polkadot-based Hyperbridge to mint 1 billion bridged DOT tokens on Ethereum through a forged cross-chain message, ultimately stealing approximately $237,000. Korean exchanges Upbit and Bithumb suspended DOT deposits and withdrawals.
Anthropic restricted access to its Claude Mythos AI model after it identified thousands of zero-day vulnerabilities across major operating systems, browsers, and cryptography libraries that DeFi infrastructure depends on. The company warned AI models have reached coding capability surpassing most skilled humans at finding exploits.
Security researcher Taylor Monahan has identified at least 40 decentralized finance platforms that she claims have been infiltrated by North Korean IT workers at some stage, representing a seven-year pattern of systematic infiltration of the DeFi ecosystem.
Algorand jumped 50% after a Google Quantum AI research paper highlighted the blockchain as a live example of post-quantum cryptography implementation, while warning that quantum computers could threaten Bitcoin and Ethereum's current cryptographic security.
Google researchers published findings showing quantum computers may require 20x fewer qubits than previously estimated to break elliptic curve cryptography used by Bitcoin and Ethereum. The research suggests fault-tolerant quantum machines capable of threatening crypto security could arrive by 2029-2032, accelerating industry urgency around post-quantum upgrades.
Federal prosecutors charged Jonathan Spalletta with exploiting smart contract vulnerabilities in Uranium Finance twice in April 2021, laundering funds through Tornado Cash and spending proceeds on collectibles including Pokémon cards and antique coins. He faces up to 30 years in prison.
DeFi protocol Balancer Labs is winding down its corporate operations following a $128 million exploit on November 3, 2025, which made the company a liability due to mounting legal exposure. The protocol is pivoting to a DAO-first governance structure.
