Identifying and preventing vulnerabilities - Crossword

Clues

1. A weakness in a system that an attacker could take advantage of (13)
2. Monitors incoming and outgoing traffic and blocks whatever the rules do not allow (8)
3. Scrambles data so that it cannot be read without the correct key (10)
4. Secret values typed by a user to prove who they are, which should be strong (9)
5. Settings that limit each user to only the files and programs they need (12)
6. Software that detects, blocks and removes malicious programs (11)
7. Authorised simulated attack on a system to find weaknesses that can be fixed (18)
8. Methods such as locks, key cards, CCTV and guards that protect the hardware (16)