8 Digit: Password Wordlist

An 8-digit password wordlist is a specific type of dictionary used in cybersecurity, primarily for password cracking and security auditing. Because an 8-digit password typically implies a sequence of numbers (like a PIN), the generation and handling of these wordlists involve specific mathematical and computational challenges.

Here is a complete guide regarding 8-digit password wordlists, covering their structure, generation, file sizes, and usage in security testing. 8 Digit Password Wordlist


Downloading Pre-Made Wordlists (Proceed with Caution)

Public wordlists (e.g., rockyou.txt, SecLists) contain many 8-digit passwords. You can filter them: An 8-digit password wordlist is a specific type

# Extract only 8-character lines from rockyou.txt
grep -E '^.8$' /usr/share/wordlists/rockyou.txt > 8-digit-only.txt

Disclaimer

This guide is for educational purposes and authorized security auditing only. Creating or using wordlists to gain unauthorized access to systems you do not own or have explicit permission to test is illegal. Always practice ethical hacking. Disclaimer This guide is for educational purposes and


Why Focus on 8 Digits?

  • Many legacy systems require minimum 8 characters.
  • Users often choose predictable 8‑character passwords when forced to meet length requirements.
  • Attackers prioritize 8‑digit masks in brute‑force attacks after trying common shorter passwords.

Best practices for defenders

  • Enforce minimum password length longer than eight characters and encourage passphrases.
  • Implement multi-factor authentication (MFA).
  • Use rate-limiting and account lockout policies to mitigate brute-force attacks.
  • Store passwords with strong, salted hashing (argon2, bcrypt, scrypt) and high work factors.
  • Monitor for reuse of known-breached passwords and block them.

Legal & Ethical Use (⚠️ Very Important)

Only use wordlists on systems you own or have explicit written permission to test.
Unauthorized access to any computer system is illegal in most jurisdictions (Computer Fraud and Abuse Act in the US, similar laws globally).

Hashcat (GPU Accelerated)

If you have hashes (e.g., from a database leak or a SAM file):

hashcat -m 0 -a 0 target_hashes.txt wordlist.txt
  • -m 0: Hash type (MD5 in this example).
  • -a 0: Attack mode (Dictionary/Straight).

Note: For 8-digit numeric passwords, Hashcat's Mask Attack (-a 3) is often faster than using a wordlist file because it generates the candidates on the fly without reading from a disk.

  • Hashcat Mask Command: hashcat -m 0 -a 3 target_hashes.txt ?d?d?d?d?d?d?d?d (?d represents a digit).