Island, which protects the corporate browser from "runaway" SI agents, raises $400 million at a $6.4 billion valuation
Prepared by Sintelligent with the help of SI. Publication time restored from the build log. . Updated: .
Control over agents is becoming a big business of its own: the freer SI is, the more costly oversight of it becomes.
The Series F round was led by Evolution Equity Partners with participation from J.P. Morgan and Sequoia; the valuation rose by $1.8 billion. Last month Island added an inventory of employees' SI agents, a map of MCP servers, blocking of risky SI tools and filtering of malicious prompts. By mid-2027 the company plans to hire 500 people.
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