Privacy-focused layer-1 blockchain Secret Network is proposing to move from its longtime home on Cosmos to Ethereum layer-2 Arbitrum, citing security risks from artificial intelligence, among other reasons. Secret Network has been running privacy-preserving smart contracts on Cosmos since 2020, as the ecosystem had strong momentum back then, but the “environment has changed,” the team said Tuesday.  “The security risk is the part we take most seriously,” it said. “Old code is becoming dramatically easier to analyze … With AI, the cost of attacking stale code is falling across the board.” The recent Axelar-Secret IBC bridge exploit highlighted growing security risk from aging,…

In brief Tether will invest $20 million in a strategic financing round for Mercado Bitcoin, a Brazilian crypto platform, to expand blockchain-based financial services in Latin America. Mercado Brazil said it now serves 4.5 million users, has issued more than R$2 billion in tokenized assets, and holds over 10 licenses across Brazil and Europe. Funds will go toward expanding payments infrastructure, scaling tokenized investment products, growing lending capabilities, advancing on-chain capital markets, and pursuing international expansion. Prominent stablecoin issuer Tether said Tuesday it will invest $20 million in a strategic financing round for Mercado Bitcoin, a Brazilian cryptocurrency exchange, as…

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