Socket Security Raises $60M Series C at $1B Valuation — Counts Anthropic, xAI, Cursor, Figma, and Vercel as Customers

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Socket, a supply chain security startup, raised $60M Series C led by Thrive Capital (with a16z participation) at a $1B valuation, bringing total funding to $125M. The platform blocks malicious open-source packages before download, reporting 1,000+ attacks blocked weekly. Its customer list reads like a who's-who of AI tooling: Anthropic, xAI, Replit, Cursor, Figma, and Vercel. For builders running AI agents that install dependencies autonomously, Socket's firewall sits at a critical choke point in the agentic supply chain.