Brute Force Attacks - Crossword

Clues

1. Automated trial and error method that can make millions of password guesses per second. (10)
2. Secret string of characters used to protect an account. (8)
3. What identifies an account when you log in with a password. (8)
4. Short code of digits used to unlock a phone or card. (3)
5. Authentication using something you know and something you have. (9)
6. An account may do this after too many wrong password attempts. (4)
7. Capital letters mixed with numbers and symbols to make a password stronger. (9)
8. Punctuation such as exclamation marks and hash signs, used in strong passwords. (7)
9. A strong password uses at least eight of these, mixing letters, numbers and symbols. (10)