Cybercriminals are increasingly using AI in their attacks. At the same time, cyber defenders are also turning to the technology to fight back. Depthfirst, a security startup positioning itself at the forefront of this AI-powered defense, announced Wednesday that it had raised $40 million in a Series A round. Founded in October 2024, the company raised the round from Accel Partners, which led the investment, with participation from SV Angel, Mantis VC, and Alt Capital. Depthfirst offers a platfor...