SlowMist's security team issued an alert on December 3 regarding a phishing attack where a user's account Owner permission was transferred, resulting in over $3 million in stolen assets and approximately $2 million trapped in DeFi protocols. The attack replaced the victim's core Owner permission rather than exploiting traditional authorization theft, rendering the user unable to transfer funds, revoke permissions, or operate DeFi assets despite funds appearing intact. Attackers exploited two scenarios: carefully crafted transactions showed no fund changes during wallet simulation, and users unfamiliar with Solana's ownership modification feature signed malicious requests. SlowMist advises users to verify whether authorization signatures contain high-risk operations such as Owner permission modifications.

BlackRock transferred 44,140 ETH, valued at $134.5 million, to Coinbase Prime on December 3, on-chain data show. Lookonchain detected the transaction.

Foundation company registrations in the Cayman Islands rose 70% year-over-year, surpassing 1,300 by end-2024 and adding over 400 in the first five months of 2025, Cointelegraph reports. Cayman foundations have become the primary legal structure for DAOs to hold treasuries, manage IP, and handle compliance, with at least 17 foundations holding treasuries exceeding $100 million. The OECD CARF reporting framework takes effect in 2026 and will standardize automatic information exchange to address tax avoidance in crypto transactions. The Cayman Islands will require crypto service providers engaged in trading and custody to conduct due diligence and reporting, though protocol treasuries and passive foundations holding assets are expected to fall outside mandatory disclosure requirements.

Binance Alpha will open its airdrop claim function at 21:00 UTC+8 on Dec. 3, BlockBeats reports. Users holding at least 242 Alpha points can claim tokens on a first-come, first-served basis. The claim window will remain active until the airdrop pool is fully distributed or the campaign concludes.

Babylon announced on Dec. 3 a partnership with decentralized lending protocol Aave to support native Bitcoin as collateral in Aave V4, eliminating the need for wrapped tokens or custodial intermediaries. The collaboration will integrate Babylon's trustless vault infrastructure with Aave's hub-and-spoke architecture, allowing users to deposit native BTC on the Bitcoin base layer while borrowing stablecoins and other assets in Aave markets. Testing is expected to begin in early 2025, with product launch planned for April.

Address 0xFC78 erased over $1.78 million in accumulated profits and lost an additional $117,000 in principal across two consecutive losing trades, on-chain data show. The trader then opened new short positions totaling approximately $33.4 million: 200 BTC ($18.75 million) with 30x leverage and 5,000 ETH ($15.26 million) with 20x leverage, lookonchain reported on December 3. Liquidation prices are set at $94,721.61 for BTC and $3,229.41 for ETH.

Bitcoin briefly surpassed $91,000 on Dec. 3 after former White House economic advisor Kevin Hassett emerged as a potential Federal Reserve chair nominee, Trump said at a cabinet meeting. U.S. tech stocks rose alongside the cryptocurrency on market expectations that a Fed leadership change in June could accelerate monetary easing. A BiyaPay analyst noted sustained easing expectations—driven by peak interest rates and improving liquidity—could benefit technology and crypto assets, though volatility may rise if employment or inflation data disappoint.

Strategy is engaging with MSCI regarding potential exclusion from its indices, with a decision expected on Jan. 15, Michael Saylor said. The company is currently a constituent of the MSCI USA and MSCI World indices, with a portion of its market cap linked to benchmarks through passive instruments such as ETFs. A JPMorgan report from last month indicated that if other index providers follow suit with exclusion, it could trigger outflows of up to $8.8 billion. Strategy's stock has declined over 37% this year, which Saylor attributed to the company's leveraged exposure to Bitcoin, noting that "if Bitcoin drops 30%, 40%, the stock will fall more because the equity itself is leveraged."

Bitcoin traded around $90,000 on Dec. 3 after rebounding 5% from $86,000 earlier in the week, QCP Capital said in its daily market note. Futures markets have priced in a 90% probability of a 25 basis point rate cut at next week's FOMC meeting, which will lack new CPI or NFP data. Prediction markets show approximately 85% odds of Kevin Hassett becoming the next Fed Chair, with confirmation expected in early 2025 as current Chair Powell's term ends in May. MicroStrategy raised approximately $1.4 billion through equity issuance over the weekend, extending its operational runway to about 21 months while lifting its mNAV to roughly 1.14, QCP noted.