Sorry for the late update, guys! That trip to China really messed up my schedule but it's been five years since I visited my family there so it was a long overdue trip.
Anyway, since I know we're all ~so mature~ on the internet here, a penetration tester is someone who works in information security and tests if a website or workplace is safe from getting its data stolen or compromised, not the dirty stuff. Frey doesn't actually work for the university's infosec department, he's just pretending to be a person of authority in order to social engineer Vance into working for him. The touch on the shoulder is also strategically placed to distract Vance from focusing too much attention on Frey's fake work ID.
I promise the next one will be out sooner! Also, I'll have a surprise for everyone soon! ;D