“There are people who are paranoid about public cloud, for good reason. There are a lot of reasons to use a public cloud. It’s just not something that we do here.” So says Tom Sparks, Director of Network Operations at Norse, the cybersecurity startup that operates a distributed network of sensors and crawlers that process hundreds of terabytes of data daily looking for signs of cyber-attacks. For file sharing between its employees, Norse uses a solution from an up-and-coming cloud storage startup, AeroFS. Based in Palo Alto, California, AeroFS has raised a total of $14.5 million to build its file-sharing solution. Unlike market leaders Box and Dropbox, AeroFS enables each customer to keep all their files within the company’s private network. It’s cloud storage, without the cloud. “Customers come to us because they wouldn’t even consider the well-known cloud storage companies,” says AeroFS founder and CEO Yuri Sagalov. “They value their data and they want to own it and control it.” AeroFS is growing rapidly,