Data level protection - Crossword

Clues

1. Hardware or software barrier that monitors and blocks incoming and outgoing network traffic (8)
2. Software that scans files, emails and removable drives for malware and tries to block infection (9)
3. Process of using an algorithm and a key to scramble readable data (10)
4. Task of increasing security by updating software, removing unused services and limiting access (15)
5. Copy of data kept so it can be restored after a major system failure (6)
6. Scrambled data produced by encryption that cannot be read without the correct key (10)
7. Readable form of data before it is scrambled for transmission or storage (9)
8. Code or password needed to turn scrambled data back into its readable form (13)
9. Security method using unique physical features so only one user can unlock a device (10)
10. Checking who someone is, sometimes with a password and a code sent to a phone (14)