Kenna Security has raised a $48 million funding in a Series D funding round, the company confimed to Business Insider. That round, led by Sorensen Capital and Citi Ventures, values the company at over $300 million, according to a source familiar with the matter. Read more stories like this on BI Prime. San Francisco-based cybersecurity company Kenna Security has raised $48 million in a Series D funding round, according to a source familiar with the matter and confirmed by the company.