Ethereum developers are exploring ways to enhance privacy on the network following sanctions against Tornado Cash in 2022, which spurred discussions about the necessity of default privacy. Security researcher Pascal Caversaccio argues for a privacy-oriented Ethereum roadmap, suggesting that privacy should not be an optional feature but a default state. He proposes several interventions, including encrypting the public mempool and utilizing zero-knowledge cryptography to safeguard transactions. Ethereum co-founder Vitalik Buterin supports these ideas, emphasizing the need for on-chain payment privacy and suggesting a shift to a 'one address per application' model to disconnect public links between activities. The upcoming Pectra upgrade has no major privacy focus, but the subsequent Fusaka upgrade may include significant changes. The ongoing discussion highlights a critical juncture for Ethereum's approach to financial privacy.

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