AI-based cloud-native email security platform company Abnormal Security has closed a $210 million Series C round of financing.

The investment was led by Insight Partners, with participation from Greylock Partners and Menlo Ventures.

The investment pegs Abnormal Security at a $4 billion valuation, the company said in a statement.

Read the blog post from Abnormal Security announcing the funding here.

[Image courtesy: Abnormal Security]