San Francisco -- CloudPassage, a San Francisco-based developer of cloud server security technology, said on Wednesday it has raised $14 million in its second round of funding, led by Tenaya Capital. Previous backers Benchmark Capital and Musea Ventures also participated in the round, which increased the company's total funding to $21 million. The company said it will use the proceeds to accelerate market penetration of Halo, its cloud server security platform, as well as to extend its functionality. The company launched Halo Professional, its first commercial product, last November, and followed in February with Halo NetSec. "With the cloud quickly gaining traction, we were the first to provide a security platform that allows companies to safely leverage this new computing model," said co-founder and CEO Carson Sweet.