Strong Password Checker

TL;DR

This guide shows you how to check your password strength using online tools and command-line utilities. We’ll cover free websites, Python scripts, and basic security advice.

Checking Password Strength

1. Online Password Checkers: These are the easiest way to get a quick assessment.
   • How they work: Most check against known breached password lists (like Have I Been Pwned) and estimate complexity. They don’t actually *see* your password; the checking happens on your computer before sending data.
   • Recommended tools:
     • Password Monster – Simple, visual feedback.
     • SecurityScoreCard Password Strength Test – More detailed report.
     • Have I Been Pwned (Pwned Passwords) – Checks if your password has appeared in data breaches. Use with caution; it’s best to check variations of passwords, not the actual one you use.
2. Using a Python Script (for more control): This requires some basic programming knowledge.
   • Install the zxcvbn library: Open your terminal or command prompt and run:

     pip install zxcvbn

   • Example script: Create a Python file (e.g., password_checker.py) with the following code:

     from zxcvbn import zxcvbn
     
     pwd = input("Enter your password: ")
     result = zxcvbn(pwd)
     
     print("Password strength score:", result['score'])
     print("Feedback:", result['feedback']['warning']) # Shows potential issues
     

   • Run the script: In your terminal, navigate to the directory where you saved the file and run:

     python password_checker.py

3. Command-Line Tools (advanced): For Linux/macOS users.
   • pwscore: A simple tool for estimating password strength.

     sudo apt install pwscore # Debian/Ubuntu
     brew install pwscore # macOS with Homebrew
     pwscore your_password

Improving Your Password Strength

1. Length matters: Aim for at least 12 characters, but longer is better.
2. Mix it up: Use a combination of uppercase letters, lowercase letters, numbers, and symbols.
3. Avoid personal information: Don’t use your name, birthday, pet’s name, or anything easily guessable.
4. Use passphrases: A long, random sentence is much harder to crack than a complex password.
   • Example: “Red car jumps quickly over the lazy fox!”
5. Password Managers: Use a reputable password manager (e.g., LastPass, 1Password, Bitwarden) to generate and store strong passwords for you.
6. Enable Multi-Factor Authentication (MFA): Adds an extra layer of security by requiring a code from your phone or another device in addition to your password.

cyber security Best Practices

• Never reuse passwords across multiple accounts.
• Be wary of phishing attempts – don’t enter your password on suspicious websites.
• Regularly update your passwords, especially for important accounts.