Suppose the course instructor has created a database of all information for this course: homeworks, exams, handouts, and grades. Create a detailed threat model for this database: what should the security goals be? What are reasonable attacks, and who are the potential attackers? What threats should we explicitly exclude from consideration? Now assume that the database is stored on the instructors personal laptop, with no network card and no floppy disk drive.1 Propose at least two security mechanisms that would help counter your threat model (e.g. file or disk encryption, a laptop lock, a safe to store the laptop, a kevlar laptop sleeve)