San Francisco-based ethical hacking service provider Horizon3.ai has successfully raised $250 million in a late-stage funding round. The round was co-led by NightDragon and NEA, both of which had participated in its early funding, along with over a dozen new and existing investors. Given that cutting-edge AI models like Anthropic's Mythos have amplified the power of cyberattacks, raising concerns among the corporate world, Horizon3.ai aims to seize this opportunity to grow its business.