Horizon3 Raises $250M Series E, Reaches $2B Valuation Amid Rising AI Threats

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Cybersecurity startup Horizon3 has secured $250 million in a Series E funding round, pushing its valuation to $2 billion. The capital raise reflects growing enterprise demand for continuous, AI-driven security validation tools. Traditional annual penetration testing is increasingly seen as insufficient as AI-powered cyber threats become more sophisticated. Companies are turning to automated, ongoing security solutions to better protect their systems in real time.

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