I recently started a company, ServerPilot. We're building a secure hosting control panel. It's modern, secure, and made for PHP developers running their web applications on cloud servers.
Before ServerPilot, I was a computer science Ph.D. student at U.C. Berkeley. My research involved computer security, privacy, usability, and measurement. My advisor was Vern Paxson. You can learn more about my research on my academic site.
My primary open source project is my Firefox extension RequestPolicy. I began working on RequestPolicy in 2008 and it's now used by tens of thousands of people. As of late 2011, it's also my primary research project. So, I'm *supposed* to be working on it. Just thinking about that is enough to make me feel like one of the luckiest people alive. How many people get paid to work on something they're passionate about? (I guess the luckier ones get paid more than a stipend to do so.)
You can email me at justin [at] justinsamuel [dot] com.