Island and Cyera each raise $400M as AI security pays

Island, which builds a secure enterprise browser, raised a $400M Series F led by Evolution Equity Partners at a $6.4B valuation. Cyera, a data-security vendor for AI agents, added $400M in a Series G extension, bringing total funding to $2.7B. Snorkel AI raised $350M in a Series E for training-data tooling.

• Island: $400M Series F at a $6.4B valuation, more than double its 2024 mark
• Cyera: $400M Series G extension, total funding now $2.7B
• Snorkel AI: $350M Series E for training data and task environments
• Evolution Equity Partners led both rounds, with Goldman Sachs Growth Equity