Proofpoint Security Engineer interview questions

The internal recruiter I spoke to on the phone was incredibly condescending. Gave me crap for looking for new opportunities before the one-year mark at my current job, and for only being at my previous company for three years (???). As if mild job-hopping is unheard of in Silicon Valley. This call also included a lot of personality and experiential questions, so it was not just an exploratory call like many recruiter screens are. The internal recruitment team seemed a bit disorganized in general. I got a kind of last-minute call the day before to reschedule my technical phone interview, but the interviewer ended up calling me at the old time anyway. Proofpoint wanted an NDA for a 30-minute phone screen, which I thought was ridiculous. The technical screen was equally awkward. The interviewer asked me how to do a security review, from start to finish. This was a very broad question, so I asked what assumptions I could make, what aspects he wanted me to focus on, etc. He just said "everything", which was really not helpful. He seemed amiable enough, but didn't have a lot of follow-up questions for any of my answers, and basically just left me to come up with a monologue for the entire time.