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A newly disclosed core PHP security vulnerability that could allow unauthenticated remote code execution on web servers is raising concern across the cryptocurrency industry, CoinGape reported. The flaw does not directly affect smart contracts or cold wallets, but it could impact web-based environments such as dApp front ends and exchange dashboards. Some projects, including BNB Chain and Trust Wallet (TWT), announced they do not use PHP in their technology stacks. U.S.-based exchange Kraken also said it is secure after moving its core backend to Rust.

New money has recently been flowing back into the Bitcoin market, while short-term holders are still in profit with unrealized gains of around 11%, CryptoQuant contributor Axel Adler Jr. said. Adler added that if Bitcoin falls below $75,100, those holders’ positions could enter loss territory, potentially increasing selling pressure.

Independent lawmaker Han Dong-hoon called for a delay to virtual asset taxation and a second phase of legislation, arguing that taxing only virtual assets after the abolition of the financial investment income tax on gains from stocks and bonds would seriously undermine fairness, according to Kukinews. In a Facebook post, Han said the current tax plan could unfairly burden investors because it lacks measures to offset losses and remains exposed to tax avoidance through gifts. Han added that the next step should be to use second-phase virtual asset legislation to clearly define coin categories and the nature of related income, while first putting in place an environment that can properly protect investors.

U.Today reported that U.S. market analyst Jesse Eckel said advances in artificial gold production technology could make Bitcoin’s scarcity a stronger competitive advantage than gold’s. In a post on X, Eckel said artificially produced gold could eventually become cheaper, much like synthetic diamonds, and technological progress may weaken gold’s scarcity over the long term. Eckel added that San Francisco-based startup Marathon Fusion has made technical progress in converting mercury into gold. As the technology develops, gold supply could increase, while Bitcoin’s total supply remains mathematically capped, which Eckel said could strengthen Bitcoin’s scarcity advantage over the long run.

Bithumb announced it has removed XAI from its delisting watchlist. Deposits resumed at 7:30 a.m. UTC today.

Financial institutions are sharply increasing investment in cryptocurrency custody, viewing it as a core operational layer rather than simple safekeeping, according to a joint report from Ripple and Boston Consulting Group. The report said more than 30% of crypto assets, excluding exchange-held assets, are now being custodied through institutional models, and that share is continuing to rise amid stronger demand. Ripple and BCG attributed the trend to regulatory developments including MiCA and the GENIUS Act. BCG said local banks could improve revenue by as much as $100 million if they decide to enter custody, while firms including Morgan Stanley, Citi and BNY are also strengthening their in-house custody capabilities.

Bybit said it has obtained a virtual asset service provider (VASP) license from Dubai’s Virtual Assets Regulatory Authority (VARA). Bybit CEO Ben Zhou said Dubai has made significant progress in building a regulatory environment for virtual assets, and the company will continue supporting the local digital asset ecosystem while developing its business in line with VARA’s regulatory standards.

Ethereum Institutional, an independent nonprofit focused on institutional adoption of Ethereum, said on X it is hiring a head of Asia-Pacific to work in Tokyo. The hire will be responsible for building partnerships with Japanese banks, financial market infrastructure companies and institutions, and asset managers, while planning and running briefings for financial institutions and institutional investors. The organization said the role is intended to support financial institutions in using ETH for next-generation financial services.

The following are the 24-hour long/short ratios for BTC perpetual futures on the world’s three largest crypto futures exchanges by open interest: Overall: 50.59% long, 49.41% short - Binance: 49.67% long, 50.33% short - OKX: 50.38% long, 49.62% short - Bybit: 49.87% long, 50.13% short

About 16 million USDT appears to have been stolen from Indian cryptocurrency exchange CoinDCX, according to Darcy, co-founder of blockchain security firm Salus, who posted the claim on X. The theft appears to have occurred around midnight on Oct. 22, and the funds were deposited to Binance, OKX and Gate, Darcy said.

Coldcard hardware wallet maker Coinkite and its executives are facing a class-action lawsuit in Ontario, Canada, after the company’s August security incident, ODaily reported. The plaintiffs claim Coinkite had been exposed to risks since March 2021 by using a predictable random number generator. They are seeking damages, alleging violations of consumer protection and sale-of-goods laws, as well as negligence and breach of contract. The amount sought was not disclosed.

Mojo announced the release of its iOS app, "MOJO: Agent OS," on Apple’s App Store. Users can enter trading ideas on an iPhone to create AI agents, review and approve trading plans, and check execution records in the app. The app is available in 117 countries and regions worldwide. Existing TestFlight beta users can delete the beta app, install the official version 1.0.3 or later, and log in using their existing method to access their accounts, assets, trading history, and memberships. New iOS subscriptions are processed through Apple’s in-app payment system.

On-chain analyst Murphy said on X that $83,000 is a key inflection point that could determine BTC’s next price direction. According to a Glassnode chart Murphy shared, around 921,000 BTC had their last on-chain movement near the $83,000 level as of today. Murphy said when BTC fell below $83,000 on Oct. 8, the $79,000-$82,000 range had previously seen relatively light trading volume, so Murphy expected BTC to spend time in that band as trading activity increased. Murphy added that on-chain movement later picked up in that range, leading to a concentration of supply there. With BTC no longer falling further, Murphy said a renewed rise is possible, and a new trend will likely form depending on whether buying or selling pressure gains the upper hand at $83,000. Murphy added that the supply clustered near $83,000 includes 550,000 BTC generated during a past Coinbase wallet reorganization, and Murphy estimated only 100,000 to 200,000 BTC of that amount remains.

Gemini co-founders Cameron Winklevoss and Tyler Winklevoss see ZEC as potentially rising above $5,000 over the next five to 10 years, BlockBeats reported. In a recent interview, the brothers said Bitcoin uses a blockchain structure in which all transaction records are public, providing transparency and verifiability but limiting privacy features, while Zcash supports private transaction data and could complement Bitcoin by addressing that limitation.

U.S. spot Ethereum ETFs recorded a net inflow of $14.9 million on Oct. 21, reversing course after five straight trading days of net outflows, according to Farside Investors. - BlackRock ETHA: -$29.3 million - Fidelity FETH: +$13.0 million - Bitwise ETHW: +$0.9 million - Franklin EZET: +$0.9 million - Morgan Stanley MSSE: +$1.3 million - Grayscale ETH: +$28.1 million

U.S. spot BTC ETFs recorded a net inflow of $528.4 million on Oct. 21, marking a third straight trading day of net inflows, according to SoSoValue. - BlackRock IBIT: +$234.99 million - Fidelity FBTC: +$212.71 million - Grayscale GBTC: +$32.59 million - Grayscale Mini BTC: +$8.21 million - Bitwise BITB: +$19.23 million - ARK Investment ARKB: +$9.79 million - Franklin EZBC: +$7.31 million - Valkyrie BRRR: +$3.57 million

Dragonfly Capital Managing Partner Haseeb Qureshi said on X that on-chain hacking has recently surged, with losses concentrated mainly at smaller protocols with weaker security. Qureshi said cryptocurrency became a target for attacks earlier than other internet services because it is one of the easiest sectors for cybercriminals to extract financial gains from. Large protocols are strengthening security with AI tools, while smaller protocols are coming under repeated attack, Qureshi added. He said the number of hacks has jumped sharply, but total losses this year are rising at a pace similar to last year, meaning individual incidents are getting smaller as attacks concentrate on small protocols with poor security management. Qureshi also added he believes the same pattern is likely playing out across the broader web. According to a chart Qureshi shared, the annualized number of monthly hacking incidents was mostly around 100 to 200 last year, but rose to about 560 in August this year. The median loss per hack fell about 49% to $410,000 so far this year from $811,000 last year.

BNB Chain said on its official X account that its network and core infrastructure have not been affected by a recently identified PHP security vulnerability. The chain said it does not use the PHP programming language in its tech stack, leaving it unaffected by the PHP2Shell vulnerability. PHP is a programming language used for websites and servers.

Circle CEO Jeremy Allaire is not paying close attention to Bitcoin’s weak price performance this year and is instead focused on practical stablecoin use cases, BeInCrypto reported. In a CNBC interview, Allaire said he was not particularly concerned with how the price of individual digital products such as BTC moves, adding that digital dollars are tools for payments, transactions, lending and investment rather than speculation. He also said he is focused on a future in which AI software moves funds directly.

South Korea’s Financial Services Commission Chairman Lee Eog-weon said digital asset taxation should take multiple factors into account, while the government’s bill on a digital asset basic law tied to stablecoins is in the final stage of consultations, Edaily reported. Speaking at a comprehensive parliamentary audit of the Financial Services Commission at the National Assembly in Seoul today, Lee made the remarks after People Power Party lawmaker Song Eon-seok asked whether the government should abolish or delay taxation on virtual asset income until a digital asset basic law is in place. Lee said the government bill was in last-minute consultations and would be moved forward as quickly as possible for discussion. On taxation, Lee said Deputy Prime Minister Lee Hyeong-il had already addressed the issue and added that authorities are gathering views amid a range of opinions, according to Edaily.

AEON announced the launch of Agentic Checkout V2, a system that lets AI agents search for, purchase and pay for goods, while adding travel booking through crypto-based travel platform Travala. The company said users can delegate the entire travel reservation process to an AI agent. In V2, payment funds can be managed separately through a dedicated agent wallet, which is isolated from a user’s primary wallet and keeps a transparent record of transactions. AEON said the payment execution function has expanded beyond basic e-commerce purchases into service areas involving more complex intent, such as travel. Amid moves by major big tech companies including Stripe and Meta to build payment environments for AI agents, AEON emphasized that it is broadening execution into real-world service bookings such as travel based on its AI card and on-chain wallet infrastructure.

South Korean exchange Bithumb announced the temporary suspension of Babylon (BABY) deposits and withdrawals at 9:00 a.m. UTC on Oct. 22 to support a network upgrade.

South Korea’s National Tax Service plans to request a preliminary review of its notice on virtual asset taxation on Nov. 6 and issue an administrative notice on Nov. 30, Digital Asset reported. The notice is set to take effect on Jan. 1, 2027. The draft notice is to be finalized on Oct. 30, followed by public comment collection, drafting steps and a request for preliminary review, confirmation of regulatory targets, approval of the drafting plan, an administrative notice, additional opinion gathering, and implementation.

Bithumb announced a temporary suspension of deposits and withdrawals for 49 Solana-based tokens due to a Solana network upgrade. - DoubleZero (2Z) - Access Protocol (ACS) - Arcium (ARX) - Moonbird (BIRB) - Bubblemaps (BMT) - Bonk (BONK) - Cudis (CUDIS) - deBridge (DBR) - Doodles (DOOD) - Geodnet (GEOD) - Grass (GRASS) - Helium (HNT) - Holoworld AI (HOLO) - Huma Finance (HUMA) - io.net (IO) - Jito (JTO) - Jupiter (JUP) - Kamino Finance (KMNO) - Solayer (LAYER) - Mayflower (MAY) - Magic Eden (ME) - Meteora (MET) - MetaDAO (META2) - cat in a dogs world (MEW) - Moodeng (MOODENG) - Metaplex (MPLX) - Orca (ORCA) - Pudgy Penguins (PENGU) - Ponke (PONKE) - Popcat (POPCAT) - Pearl (PRL) - Pump.fun (PUMP) - Pyth Network (PYTH) - Raydium (RAY) - Render Token (RENDER) - ROA CORE (ROA) - Seeker (SKR) - Solstice (SLX) - SNS (SNS) - Solana (SOL) - Sonic SVM (SONIC) - SOON (SOON) - Official Trump (TRUMP) - Global Dollar (USDG) - Useless (USELESS) - Wormhole (W) - Humidifi (WET) - dogwifhat (WIF) - Kapybobo (PYBOBO)

Four newly created addresses received a total of 1,127 BTC from crypto market maker Wintermute, worth about $93.45 million, according to ai_9684xtpa. The transfers are estimated to reflect purchases routed through Wintermute.