Cybersecurity firm Distil Networks has closed a $21 million Series B round led by Silicon Valley-based Bessemer Venture Partners, the company announced Tuesday. Existing investors TechStars, Foundry, ff Venture Capital, Idea Fund and Correlation Ventures also participated.
The Arlington company specializes in determining whether website visitors are people or bots. Only 41 percent of website traffic comes from human users, according to the company.
“Malicious bots have become increasingly more pervasive, sophisticated and detrimental to companies around the world," CEO Rami Essaid said in a statement.