I left Matasano more than 6 years ago. Unfortunately, Matasano SFBA moved from the dentist's office (which I have fond memories of) to Sunnyvale. What I'll say right now is: I have the same disclosable interest in Apple's security as most veterans in software security: they're an elite employer and I have a bunch of friends there.

(The more important disclosure is that I don't specialize in the kind of work that would likely benefit from an unlocked phone.)