Horizon3.ai hits $2 billion valuation in $250 million funding round

**Source : Help Net Security | 3 août 2026** Horizon3.ai has announced a $250 million Series E at a valuation of more than $2 billion, tripling its valuation from $650 million at Series D in just over a year. The oversubscribed round was co-led by existing investors NightDragon and NEA, with participation from seven new investors and five returning backers. The capital underscores accelerating global demand for safe, autonomous security vali... 👉 **Lire l'article complet sur Help Net Security :** [https://www.helpnetsecurity.com/2026/08/03/horizon3-ai-250-million-funding/](https://www.helpnetsecurity.com/2026/08/03/horizon3-ai-250-million-funding/)