Coinbase has rolled out a savings account for UK customers offering a 3.75% annual equivalent rate with daily interest payments. The product, backed by ClearBank, provides FSCS protection up to £85,000 and allows instant deposits and withdrawals with no minimum balance or lock-in requirements.

A prominent Polymarket trader has issued a warning about a phishing operation targeting users through the platform's comment sections. The scheme has reportedly stolen more than $500,000 by using fraudulent private market links to capture login credentials and deploy malicious scripts on victims' devices. The attackers purchase both Yes and No shares to ensure their comments remain visible, then post obfuscated URLs leading to fake sites that mimic Polymarket's interface.

Cybersecurity firm Koi Security has identified a sophisticated malware campaign targeting Visual Studio Code extensions that steals credentials for GitHub, Open VSX, and cryptocurrency wallets. The malware uses invisible Unicode characters to evade detection and leverages the Solana blockchain as its command-and-control infrastructure. Seven extensions were reinfected on October 17, accumulating 35,800 downloads, with ten infected extensions remaining publicly available.

Rumble is advancing an all-share proposal to acquire German data center operator Northern Data at a valuation below Northern Data's approximately $894 million market capitalization, Bloomberg reported. The transaction, supported by mutual investor Tether Holdings, would enable Rumble to expand from video hosting into cloud infrastructure services. An announcement could come within days.

Spanish crypto influencer Álvaro Romillo, known as CryptoSpain, was arrested Thursday and ordered held without bail on charges of orchestrating a $300 million fraud through Madeira Invest Club. Prosecutors allege Romillo defrauded approximately 3,000 investors of €260 million through a Ponzi scheme. A Singapore bank account containing €29 million linked to entities connected to Romillo raised flight risk concerns, prompting the detention order.

Total Value Locked in decentralized finance protocols fell to $131.58 billion from $172.65 billion on October 7, a 24% decline representing over $42 billion in outflows. The withdrawal wave began after Stream Finance disclosed a $93 million loss on November 4, triggering depegging events across multiple yield-bearing stablecoins including Elixir's deUSD and Stable Labs' USDX. The broader stablecoin market contracted by $2.5 billion during the first week of November.

Japan's Financial Services Agency is implementing comprehensive reforms to regulate crypto lending, impose caps on token sales, and support a stablecoin network led by the nation's three largest banks. The regulatory framework aims to align digital assets with traditional financial instruments while enhancing investor protection and institutional participation.

Richard Teng, CEO of Binance, warned on November 7, 2025, of rising phishing scams on WhatsApp, where fraudsters impersonate company representatives to steal credentials and funds. The exchange never contacts users via WhatsApp group chats for investments or payments. Meta removed over 6.8 million scam-linked accounts in the first half of 2025, many connected to Southeast Asian fraud operations.