Security
S&P Global Agrees to Buy OpenZeppelin and Fold Smart Contract Audits Into Ratings
Unchained·September 17, 2026·1 min read
S&P Global agreed to buy OpenZeppelin, the security firm behind widely used open source smart contract libraries in DeFi, and will fold its audits into S&P Global Ratings. Last year, S&P cut Tether's stability grade to its lowest level, signaling a deeper push into crypto ratings.
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