SSI has raised a total of $3 billion in funding over multiple rounds, achieving unicorn status in September 2024. Its latest Series A round of $2 billion, closed on April 13, 2025, was led by DST Global Partners and Greenoaks. Founded in 2024 and headquartered in Palo Alto, California, United States, the company develops AI security solutions to ensure AI systems are safe, aligned with human values, and risk-free. Valued at $30 billion, SSI is positioned as a global leader in AI infrastructure and AI-native cybersecurity solutions.