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Analysts track ongoing exploit draining Avici user accounts as its token drops over 43% On-chain researchers say an attacker gained admin rights over more than 1,100 collateral accounts on the Solana neobank and is draining card balances in thousands of small transactions, with one analyst putting the total at...

17,028 просмотров • 11 дней назад •via X (Twitter)

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TL;DR - Privacy on public blockchains has historically been fragmented and episodic. Umbra introduces persistent, expressive privacy by default. - Umbra is a private financial layer on Solana, enabling private transfers, swaps, balances, and yield within a continuous shielded environment. - Umbra combines client-side zero-knowledge proofs for anonymity with MPC for confidentiality - MPC enables confidential balances via Encrypted Token Accounts (ETAs), hiding balances and transfer amounts - Privacy strength depends not only on cryptography, but on anonymity set size and user behavior. - Umbra treats anonymity sets as a first-class metric and designs the product to minimize behavioral privacy failures. - A multi-purpose shielded pool allows funds to remain private across transfers, swaps, and yield, compounding privacy over time. - The Umbra SDK allows wallets and applications to integrate private transfers, swaps, and balances, feeding activity into a shared shielded pool. - Swaps execute via public liquidity venues while identity, balances, and intent remain unlinkable. - Users can earn yield on shielded assets, incentivizing longer time in the private environment. - Umbra mitigates exit-related privacy risks through product design, including anonymity indicators, configurable unshielding delays, and confidential balances. - UTXO-based shielded systems suffer from performance decay as balances fragment into many notes over time, increasing scan and aggregation costs. - Umbra eliminates this bottleneck by consolidating balances into Encrypted Token Accounts (ETAs), using UTXOs only at the anonymity boundary. The result is encrypted balances with stable, high-performance transfers even as activity scales. - Compliance is addressed through proactive screening against risk databases and opt-in selective disclosure via read-only viewing keys. - Umbra was launched via MetaDAO as an ownership coin, with governance and economic policy determined by token holders through futarchy. - Umbra is not a mixer or a single feature, but a sovereign privacy domain with its own private state and internal economy. - Umbra is Hopecore for Privacy. Thank you all for reading!

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13,815 просмотров • 7 месяцев назад