Insight Partners, an investment firm, led a $210m Series C funding round in Abnormal Security, a developer of a cloud email security platform, with participation from Greylock Partners and Menlo Ventures. “We are fortunate that some of the most notable companies in the world, with large and complex environments, trust our AI-based email security to protect their workforce. I am thrilled about the continued customer trust in Abnormal as evidenced by our 99% renewal rate,” Evan Reiser, Abnormal Security CEO and Co-Founder.