As a cyber security specialist, my greatest strength is my intellectual curiosity. I enjoy researching the latest technology trends so that our critical information technology systems remain uncompromised. Not only do I do this by reading the latest issues of cyber security journals, I also convinced my employer to fund my participation in quarterly information technology conferences. This has allowed me to build a network of peer resources—many of whom are leaders in the field—that I can call upon for strategies when new threats arise to our systems. 
DON’T say a number. Why? you have the least amount of leverage possible at this point, assuming you’re early in the interview process. You haven’t finished interviewing with them, they don’t know if you’re any good or if they even want to hire you. So you can’t command a high salary right now. If you go too low with your price, they’ll hold you to it later. Go too high? You’ll scare them off before they even know what you’re worth!
Any candidate can read and regurgitate the company’s “About” page. So, when interviewers ask this, they aren't necessarily trying to gauge whether you understand the mission—they want to know whether you care about it. Start with one line that shows you understand the company's goals, using a couple key words and phrases from the website, but then go on to make it personal. Say, “I’m personally drawn to this mission because…” or “I really believe in this approach because…” and share a personal example or two.