如何在线检测密码强度和安全性

Why Check Password Strength?

Weak passwords are the #1 cause of account breaches:

Data Breaches: 81% of hacking-related breaches use weak or stolen passwords

Brute Force: Simple passwords can be cracked in seconds

Credential Stuffing: Reused passwords put multiple accounts at risk

What Makes a Strong Password?

A strong password should have:

Length: At least 12 characters (16+ recommended)

Variety: Uppercase, lowercase, numbers, and special characters

Uniqueness: Not based on dictionary words or personal info

Randomness: No predictable patterns

How to Use the Password Strength Checker

Step 1: Enter Password

Go to the Password Strength Checker and type your password.

Step 2: View Score

The tool calculates a strength score from 0-100 based on:

Password length

Character variety

Complexity factors

Step 3: Check Crack Time

See how long it would take to crack your password with modern computing power.

Step 4: Follow Suggestions

Implement the improvement suggestions to strengthen your password.

Password Security Best Practices

Use a Password Manager

Generate and store unique, strong passwords for every account.

Enable Two-Factor Authentication

Add an extra layer of security beyond passwords.

Avoid Common Patterns

Don't use: sequential numbers, keyboard patterns, or personal information.

Regular Updates

Change passwords periodically, especially after data breaches.

Understanding Crack Time Estimates

| Strength | Crack Time | Recommendation |
|----------|-----------|----------------|
| Very Weak | Instant | Change immediately |
| Weak | Seconds to minutes | Change as soon as possible |
| Fair | Hours to days | Improve when convenient |
| Strong | Years | Good security |
| Very Strong | Centuries | Excellent security |

Related Tools

Password Generator - Create secure random passwords

Hash Generator - Generate password hashes

IP Address Lookup - Check your network security

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