Gamer Killaboi won a $2,000 Bitcoin bounty by exploiting two critical PHP vulnerabilities. A wallet key error delayed access to the prize, but the organiser confirmed the win and arranged payment.

As older adults turn to AI for health information, families should understand the risks of inaccurate answers, sensitive data exposure and overreliance on chatbots.

Israeli Prime Minister Benjamin Netanyahu has asked officials to prepare a plan to use cryptocurrency and blockchain technology to circumvent potential banking sanctions, triggering a public rebuke from the Bank of Israel and warnings from more than 100 economists that the proposal could further damage the country’s economic standing.

Electrum released version 4.8.3 on 24 October 2026 to fix a flaw that allowed malicious servers to trick Bitcoin users into signing payments to attackers when raising transaction fees. Two users reported attacks in October, including one who lost funds, prompting developers to urge users to upgrade and verify recipient addresses before signing transactions.

Bill Gates warns that AI could trigger two decades of economic and social upheaval, calling for stronger oversight as automation reshapes jobs and daily life.

China has set a 2030 target to largely complete its national blockchain network, expanding the technology’s intended role across trade, finance, manufacturing and logistics while maintaining its restrictions on cryptocurrency-related business.

OpenAI’s security tests reveal how AI agents bypassed sandbox isolation and network controls, highlighting new challenges in securing advanced AI systems.

GMO Internet shut down its FX trading cloud service after a cyberattack potentially exposed 26,739 servers and customer credentials. The company pledged compensation and urged Japan’s government to help tackle the threat.

Microsoft Teams will use AI to detect phishing and impersonation through conversation context, adding protection against scams that bypass traditional link and attachment detection.

On Sep 21, 2026, 11:47 AM(UTC). According to Binance Market Data, Bitcoin has crossed the 84,000 USDT benchmark and is now trading at 84,834 USDT, with a narrowed 5.43% increase in 24 hours.

On Sep 21, 2026, 11:47 AM(UTC). According to Binance Market Data, BNB has crossed the 790 USDT benchmark and is now trading at 792.359985 USDT, with a narrowed 5.36% increase in 24 hours.

Hyperliquid's market value has exceeded that of Nasdaq and the London Stock Exchange. According to Odaily, the report states this comparison without providing additional details.

Bitcoin BLAKE2b developers plan to restrict miners from unlocking newly mined tokens, with a 45-day waiting period and the change slated for activation at block height 973440. According to ChainCatcher, the chain forked from Bitcoin on August 8, and its native token BTCB2 has been labeled by some trading platforms as Bitcoin BLAKE2b, Bitcoin BIP-110, or XBT. BTCB2 has fallen 84% from its September high of $1,799 and was trading at about $270 to $315 in recent hours. Developer Luke Dashjr said some BLAKE2b mining pools are “attacking” the network. After the fork, the chain kept Bitcoin’s difficulty setting and mined only about 8 blocks in the first 22 days before resuming operations through BLAKE2b hashing and difficulty adjustments. The chain is not listed by most trading platforms or by CoinGecko and CoinMarketCap, while Neoxa has said it will support the upcoming soft fork.

Foresight News reported that Hong Kong-listed game company Boyaa Interactive (stock code: 0434) announced it bought 152 bitcoin last week at an average price of $75,899. The purchase totaled about $11.56 million and was funded by idle cash reserves generated from the company’s operations. According to Foresight News, Boyaa Interactive held 4,468 bitcoin as of the announcement date, with an average cost of about $68,543.

Perpetual futures linked to Volmex's Bitcoin Volmex Implied Volatility Index debuted on Hyperliquid on Monday. According to NS3.AI, the market allows traders to take long or short positions on bitcoin's expected volatility rather than its price direction. The launch was described as the first onchain perpetual futures market for Volmex's bitcoin volatility index.