Daily brief · October 30, 2026 · Fri
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Crypto
Decrypt2 more sources covered thisPolymarket halts trading after security incident, users report unauthorized withdrawals
Polymarket paused trading and relayer actions after users reported unauthorized fund withdrawals. A wallet flagged as the suspected attacker holds about $2.65 million in POL after multiple USDC.e-to-POL swaps through Relay. Hudson Rock found a DebugBear-hosted script with wallet-draining code hard-coded to the same address. The platform's frontend may be compromised, with the trading API in major outage and the exchange in cancel-only mode.
DecryptBinance wallets drained of $5.57 billion in suspected hack, Tether and Circle freeze $1.8 billion
At least $5.57 billion left Binance-linked wallets across Ethereum, Bitcoin and Tron on Thursday, in what appears to be the largest crypto hack on record. Tether froze 975.1 million USDT and Circle froze 823 million USDC in the main receiving wallet, bringing total frozen assets to about $1.8 billion. Bitcoin fell below $79,000 and BNB dropped about 7% as the market reacted.
Binance confirms largest crypto hack in history, $5.5 billion traced from hot wallets
Blockchain investigators traced up to $5.5 billion in suspicious transfers from Binance hot wallets on Thursday. Tether froze over $1.567 billion in USDT and Circle froze over $800 million in USDC. Security researchers suspect attackers exploited the Ethereum feature EIP-7702 to gain control of a Binance wallet, submitting 50 signed authorizations before successfully draining approximately 167,464 ETH and 1.615 billion USDT. Both Binance exchange withdrawals and Binance Alpha trading remain suspended.
PublisherFirst-partySEC Charges Two Entities in $130 Million Fraud Involving False SEC Filings
The SEC charged BG Wealth Sharing Ltd and DSJ Exchange Pty Ltd with orchestrating a fraud scheme using false SEC filings to boost investor confidence. From October 2025 to June 2026, the entities raised over $130 million from tens of thousands of retail investors by promising risk-free returns from crypto trading signals. The complaint alleges the defendants submitted false Form ADV and Form D filings to create a false appearance of SEC registration and legitimacy.
Finance & macro
Alphabet’s Q4 Earnings Show $500 bn Market‑Value Loss as AI‑Driven Search Cuts Ad Revenue
Alphabet reported a 25% rise in quarterly revenue to $127.6 bn, driven largely by Google Cloud’s 103% growth to nearly $31 bn. However, operating profit fell 25%, and the company posted a negative free‑cash‑flow loss of over $9 bn for the first time in its public‑company history. The loss is almost entirely due to spending on Google’s AI‑enhanced search engine, which now delivers AI‑summaries by default. This change has reduced the number of ads shown alongside search results, cutting Alphabet’s core ad‑sales revenue. By Thursday’s close, Alphabet’s market value had dropped from $3.97 trillion to $3.46 trillion, a $500 bn decline, and the stock fell nearly 13%—its second lowest level this year. "Alphabet’s disappointing search business results highlight the challenge of funding massive AI investments while maintaining the strength of established businesses," said Forrester analyst Tracy Woo.
European Central Bank NewsFirst-partyECB Executive Board Member Piero Cipollone says Europe will transition to T+1 settlement by October 2027, reducing trade-to-payment time from two to one day
ECB Executive Board Member Piero Cipollone stated that Europe will move to T+1 securities settlement on October 11, 2027, reducing the settlement cycle from two days to one. The transition is part of a broader modernization effort to make Europe's financial infrastructure more efficient, resilient, and competitive. It will force standardization and automation of post-trade processes and align Europe with other major markets shortening their own settlement cycles.
Global & industry
Bitcoin MagazineU.S. Treasury sanctions crypto launderers behind North Korea's fake IT workers
The U.S. Treasury Department sanctioned ten individuals and one company for helping North Korea collect wages from foreign employers, many American, through fake identities and forged paperwork. Two Russian nationals, Vitold Obertas and Ilya Boykov, are accused of handling millions in crypto conversions for North Korean officials and IT workers. Treasury also named North Korean nationals Kim Ki Hyok and Kim Hyo Dong for leading Russia-based worker delegations and linked one Ethereum address to both Obertas and Boykov.
Audio reveals train drivers told to resume journey before deadly Spanish crash
Audio recordings from Spanish media show that a Renfe train was given clearance to proceed at normal speed despite another train being stalled 25km ahead on the Madrid-Seville line. Officials confirm an automatic signalling system failure had halted all trains, but the Renfe driver was ordered to continue under a backup Lateral Signalling Block system. The Iryo train driver later reported being unable to move, stating the train would not allow control of the security system, suggesting the control centre was aware the train was stationary before the collision.
The Verge · AIArizona activists fight data center expansion over water use, citing TSMC chip plant consumption
Arizona residents are opposing new data center projects due to water consumption concerns, forming a bipartisan coalition. Local activists and officials are fighting developments from Phoenix to Tucson, arguing the projects demand more water than the region can sustain. The opposition highlights a contrast with TSMC's chip plant, which uses nearly 5 million gallons of water daily from Phoenix's municipal supply.