South Korean cryptocurrency exchange Upbit discovered a critical vulnerability in its wallet software while investigating a breach that resulted in approximately $30 million in losses. The flaw enabled the generation of predictable cryptographic signatures, theoretically allowing attackers to derive private keys through blockchain transaction analysis. The exchange has patched the vulnerability and committed to compensating all affected users from company reserves.

The European Union has established regulations requiring crypto-asset service providers to report customer transactions and holdings in standardized digital format starting January 1, 2026. The rules expand the Directive on Administrative Cooperation (DAC8) and introduce a mandatory Crypto-Asset Operator register with unique identification numbers for cross-border supervision. The framework operates alongside MiCA and upcoming anti-money laundering rules.

Swedish digital bank Klarna has launched KlarnaUSD, a USD-pegged stablecoin on Tempo, the layer-1 blockchain developed by Stripe and Paradigm. The stablecoin is live on Tempo's testnet, with mainnet deployment planned for 2026. Klarna will initially use the token for internal cross-border payments to reduce costs for its 114 million customers before extending access to merchants and consumers.

Ethereum trades below $3,000 after declining 12% over seven days, with buyers defending the $2,750–$2,800 support zone. Futures open interest has risen above $34 billion as traders add leveraged long positions, increasing volatility risk. The cryptocurrency remains under pressure from institutional outflows exceeding $500 million last week.

India is developing the Asset Reserve Certificate (ARC), a rupee-pegged stablecoin, in partnership with Polygon Labs and Bengaluru-based fintech Anq for launch in Q1 2026. The stablecoin will be fully collateralized with cash, government securities, or fixed deposits and will operate alongside the Reserve Bank of India's central bank digital currency. Issuance will be restricted to business accounts under Liberalised Remittance Scheme rules, with transactions limited to whitelisted addresses.

Hyperliquid's liquidity provider system absorbed approximately $5 million in losses following coordinated POPCAT token manipulation on November 12. The attack involved leveraged positions across multiple wallets that artificially inflated prices before triggering mass liquidations. HYPE token currently trades at $38.09, below key moving averages, while futures Open Interest has declined to $1.56 billion.

Chainlink's LINK token dropped 3.3% in 24 hours despite Bitwise's proposed Chainlink ETF appearing on the DTCC eligibility list under ticker CLNK. The listing represents a procedural milestone toward potential launch, though SEC approval remains pending. A 42-day government shutdown has stalled crypto ETF reviews, creating a backlog of applications.

Starknet (STRK) has gained over 30% in 24 hours following the launch of its BTCFi initiative, which enables Bitcoin holders to stake BTC for STRK rewards. The network has attracted more than $200 million in staked assets, including 880 million STRK and 835 BTC. Technical improvements from the S-Two prover deployment and the v0.14.0 upgrade have reinforced upward momentum.

Dogecoin is trading near the critical $0.15 support level following a 12.9% weekly decline. Despite current market weakness, multiple analysts predict a significant rebound with price targets reaching $0.48 by early next year, contingent on key technical levels holding. The token faces intensified selling pressure amid elevated long position liquidations and declining futures open interest.