News · CoinDesk

Ethereum delays Glamsterdam test after security devs flag risk to existing contracts

Ethereum developers postponed the Glamsterdam upgrade on the Hoodi test network, which had been due to activate on Oct. 26, after researchers warned that proposed gas rules could let existing smart contracts permanently record failed operations. ChainSecurity said EIP-8037 and EIP-8038 could leave some contracts with more or less gas than expected, potentially making errors permanent or causing otherwise valid operations to fail; for example, creating a new storage slot could require 110,020 gas when a separate allowance is exhausted, versus 22,100 under the old rules. No replacement date has been announced for the Hoodi test or its planned 200 million gas limit, and Ethereum's mainnet upgrade date remains unconfirmed. The findings describe how existing software would behave under the proposed rules and do not indicate that existing contracts are currently being exploited.

Summary written by Upside AI from the original article. Read the source for full details.

Read the original on CoinDesk ↗

Keywords

ETHUSDTcryptoblockchaincybersecurity

Open a keyword to see other news on the same topic.

Related tickers and likely impact

ETH/USDT

▼ Likely negative

Ethereum

Relevance: low

MarketCrypto
ExchangeBinance
SectorLayer 1
Market cap$294.2B
Close on 10/22/20262,389.14
Change that session-3.42%
ETH/USDT price, forecasts and signals →

Impact is scored by AI from the headline and may be wrong. It is not investment advice.

Related news

  • JPMorgan's JPM Coin Arrives on Ethereum, Putting Bank Dollars on a Public Blockchain

    JPMorgan has launched JPM Coin on Ethereum for institutional clients, who can redeem it for dollars at any time; the token first launched on Coinbase's Base network in November 2025. Each unit is a deposit token representing a dollar held in a JPMorgan account, and only vetted counterparties can hold it, with crypto firms expected to use it for payments and financial institutions to settle trades and post collateral. Kinexys, the unit behind the token, has handled more than $4 trillion in cumulative transactions and averages about $7 billion a day, versus roughly $12 trillion a day across JPMorgan's wider payments business. The move puts the bank in competition with stablecoin issuers, after a consortium of more than 100 companies including Visa, Stripe and Mastercard launched its own dollar stablecoin last month. JPMorgan, Citigroup and other large banks also plan a shared 24/7 tokenized deposit network as early as the first half of 2027.

    Yahoo Finance·▲ ETH/USDT▲ JPMcryptoJPMorganblockchain
  • Ethereum delays Glamsterdam Hoodi testnet launch over security risks

    Ethereum has postponed the Glamsterdam upgrade on the Hoodi testnet, originally scheduled for Oct. 26, so developers can examine how EIP-8037 and EIP-8038 interact with deployed smart contracts. ChainSecurity warned that the two proposals could weaken safeguards against insufficient gas griefing, potentially letting contracts permanently record failed operations and blocking otherwise valid user actions. The firm said it identified 13 real-world examples of potentially affected contracts and is coordinating responsible disclosure with the projects involved, without naming them. Security researcher pcaversaccio called the risks “serious” in an Oct. 21 GitHub comment and urged a reassessment of the hard fork. The mainnet timeline, which developers had been considering for early December, is now uncertain.

    Cointelegraph·▼ ETH/USDTETHUSDTcryptocybersecurity
  • Wallet Linked to Drift Exploit Sends $61 Million in Ethereum to Tornado Cash

    Wallets linked to Drift's April 1 exploit moved about 25,700 Ethereum, worth roughly $61.56 million, into the Tornado Cash mixer over about two hours on Tuesday. Arkham data shows 71 addresses tied to the attacker still hold 81,454 ETH, worth about $198.58 million, after an earlier 23,095 ETH transfer in July. The attacker gained admin powers, introduced a fake token and used it to borrow real liquidity from Drift's Solana vaults, in an exploit totaling $295 million. Drift opened claims for its DFX recovery token on Oct. 1, and early redeemers received roughly 0.0104 USDT per token, about a penny per dollar lost.

    Decrypt·▼ ETH/USDTcryptocybersecurityETHUSDT
  • Qubic restarts blockchain, opens recovery claims after $1.4M hack

    Layer-1 blockchain Qubic restarted its network and opened a recovery process after an attacker drained roughly $1.4 million in QU tokens from 1,404 accounts by exploiting predictable wallet seeds. The network was halted on Sunday to stop stolen funds from moving and resumed processing on the evening of Oct. 19. Its validators, known as Computors, approved the recovery plan, and affected users can check their address and file claims until May 1, 2027. The flaw came from an insecure random-number generator in Qubic's web wallet on certain Apple devices and browsers, and the project says wallets created before version 4.26.4 should be treated as insecure, with users advised to update, create a new wallet and move their funds.

    Cointelegraph·cryptocybersecurityblockchain
  • Aptos rolls out Encrypted Mempool to curb frontrunning, sandwich attacks

    Layer-1 blockchain Aptos has launched an optional Encrypted Mempool feature on its mainnet that keeps pending transactions hidden until their order is finalized, aiming to curb frontrunning and sandwich attacks. When users opt in, their wallet or app encrypts transaction details on the device, validators agree on order without seeing the contents, and they decrypt collectively once the order is locked. Sandwich attacks cost Ethereum traders about $60 million over the 12 months through October 2025, according to Cointelegraph's analysis, while Bitquery found they generated $29.7 million for Solana bots over 11 months. The protection has costs: encrypted transactions must pay a minimum gas price twice the network's base minimum, and add about 20 milliseconds per block in tests with 50 nodes.

    Cointelegraph·cryptoblockchaincybersecurity
  • Bitcoin reclaims its cloud as Altcoin reversal signals broaden

    Bitcoin completed a daily close above the Cloud, returning to strong bullish mode, while altcoin reversal signals are broadening. Confirmation depends on the ticker and timeframe: ETH remains in daily bearish consolidation despite a four-hour Close Short, while ETH/BTC shows bullish consolidation. BTC dominance may print a daily bearish RSI reset that is not yet confirmed, and combined stablecoin dominance has closed below its daily Cloud and is now strong bearish. Several altcoins, including BNB, BCH, LTC, UNI, SUI and AAVE, have closed earlier Close Longs, but the article notes that closing a Close Long does not automatically mean a chart is in strong bullish mode.

    kitco.com·▲ BTC/USDT▲ ETH/USDTbitcoincryptoaltcoins

Related markets

Crypto →

Latest news

  • This Top Investment Strategist Thinks a Bitcoin Supercycle Is Coming Soon. Here's Why He's Wrong.

    The article argues a Bitcoin “supercycle” probably isn't coming soon and that past supercycle calls have a poor record. James Thorne, chief market strategist at Wellington-Altus Private Wealth, said in an interview with Bitcoin Magazine on Oct. 15 that he expects a run “for the ages” and that the four-year cycle is no longer relevant. He cites the Genius Act stablecoin law, growing asset tokenization, and spot Bitcoin ETFs that had drawn $57.8 billion in cumulative net inflows as of Oct. 20. The article counters that “supercycle” has no fixed definition and that such predictions often appear early in bull markets and have failed before, and it outlines an approach of accumulating Bitcoin gradually in small amounts, without overweighting it in the portfolio, and holding for at least five years.

    Yahoo Finance·▼ BTC/USDTbitcoincryptoETF
  • Defense giant Saab sees orders triple after Gripen fighter jet deal with Ukraine

    Saab reported third-quarter earnings and revenue above expectations, with new orders more than tripling from a year earlier to 65.8 billion Swedish kronor ($6.6 billion), boosted by the Gripen deal with Ukraine. Third-quarter sales reached 20.6 billion kronor and EBIT reached 1.95 billion kronor, both ahead of FactSet forecasts of 20 billion and 1.9 billion kronor. The 24.6 billion kronor contract for 16 Gripen E jets for Ukraine was signed in June, with deliveries scheduled for 2029-2030, while other orders included 10.1 billion kronor for GlobalEye for a Middle East customer and 8.7 billion kronor for systems for German frigates. CEO Micael Johansson said growing customer demand is reflected in major contract awards, but Saab shares have fallen in recent months as some investors question whether valuations have outpaced the industry's ability to deliver.

    CNBC·defenseUkraineEurope
  • Nvidia invests in AI video startup Higgsfield- Bloomberg

    Nvidia and TCV invested in AI video startup Higgsfield Inc as part of an extension to its August funding round, according to a Bloomberg report on Friday. The investment is part of a $400 million round and aims to further fund AI infrastructure, though its value was not immediately disclosed. Higgsfield was valued at $5.4 billion in the round. The San Francisco-based company, founded by a former Snap Inc executive, has most of its engineering talent in Kazakhstan, and the deal came during Nvidia CEO Jensen Huang's visit to the country.

    Yahoo Finance·• NVDANvidiaartificial intelligenceAI investment
  • Meta (META) Stock Price Sinks As Q3 Results Expose AI Cash Strain

    Meta Platforms shares fell about 7%, from US$697.52 to roughly US$648.85, even though Q3 2026 revenue rose 26% to US$64.6b. Net income excluding special items reached US$9.9b, more than triple the prior-year level, but investors focused on the profit squeeze from heavy AI spending and a US$9.9b legal charge tied to teen safety settlements and broader legal actions. Free cash flow turned to an outflow of roughly US$2.1b in Q3, while 2026 capex is now guided to US$135b to US$145b. The article says the stock could be a mild 13% overvalued relative to the cash flowing through the business.

    Yahoo Finance·▼ METAMETAearningsAI investment
  • Stocktwits AI Roundup: Meta’s Capex, Lam’s Supply Warning Hit Tech Stocks As Netflix Disappoints

    Tech stocks fell sharply on Thursday as concerns grew over whether massive AI investments would generate sufficient returns; the Nasdaq dropped 2.6%, its steepest daily decline since June, while the S&P 500 fell 1.2%. Meta tumbled 7% after raising the low end of its capex forecast by $5 billion to $135 billion to $145 billion and announcing plans for a new share structure, despite better-than-expected Q3 revenue; Nvidia (NVDA) lost 4% and SpaceX (SPCX) fell about 9%. Netflix shares slid after its Q4 profit forecast fell short of expectations and it cut its full-year advertising forecast, even though Q3 revenue rose nearly 12%. Western Digital and Lam Research both reported results above expectations, but WDC shares fell 6.4% the day after its report.

    Yahoo Finance·▼ META▼ QQQ▼ NVDAtech stocksAI investmentearnings
  • Financial System Report (October 2026)

    The Bank of Japan's October 2026 Financial System Report assesses that the system remains broadly stable: banks have enough capital and stable funding to withstand a global financial crisis-level stress or a compound shock of higher oil prices, weaker AI expectations and a sharp rise in interest rates. Close monitoring is warranted for the Middle East, the profitability and financing of AI investment, and foreign non-bank financial intermediaries (NBFIs). Stock prices remain above trend, though P/E ratios are broadly around their average levels since 2008 as expected earnings rise. Longer term, declining loan demand from population decline could weaken bank profits and loss-absorbing capacity, raising the risk of either contraction or overheating in lending. The report also examines the effects of energy and raw material prices and rate hikes on SMEs and households, and cybersecurity threats from frontier AI.

    Bank of Japan·Japanbanksinterest rates

All news →

Get the briefing on Telegram or Zalo

Join the Upside Telegram channel or Zalo group for the Vietnam stocks and gold briefing at 8:00 and 19:00 (Vietnam time) on trading days, plus a weekly wrap on Saturday morning.