NowSecure is a company that does pentesting against apps built for mobile devices. Not a new segment in the security sector, but certainly one that is lesser known to most. Are you sure the app you are using isn't spying or stealing information from you? NowSecure can help you be sure.
Grifter, who has been running the Blackhat NOC (network operations center) for the past 15 years and what it takes to command such a task. He is also on the review board, so if you want to present a topic at any upcoming Blackhat event, it is possible he'll be reviewing your research. You can follow him on Twitter @grifter801