How to Create a Strong Password in 2026

Despite years of warnings, the most commonly used passwords remain shockingly predictable. "123456", "password", and "qwerty" still top breach lists year after year. If any of your accounts use something similar, this guide is for you.

A strong password is the first barrier between your personal data and an attacker. This article covers exactly what makes a password strong, how to build one you can actually remember, and the mistakes that make cracking trivial.

What Makes a Password "Strong"?

Password strength comes down to one concept: entropy. Entropy measures how unpredictable a password is, expressed in bits. The higher the entropy, the more guesses an attacker needs.

Password	Estimated Entropy	Time to Crack (Offline)
123456	~10 bits	Instant
password1	~20 bits	Seconds
Tr0ub4dor&3	~28 bits	Minutes to hours
correct-horse-battery-staple	~44 bits	Centuries
dG#9kL!mP2$vQ8nR	~80 bits	Millions of years

The takeaway: length beats complexity. A long passphrase is far harder to crack than a short, complex string of symbols.

The 5 Rules for Creating Strong Passwords

1. Make It at Least 12 Characters

Every additional character multiplies the number of possible combinations exponentially. Eight characters is no longer enough — modern GPUs can test billions of hashes per second.

• Minimum: 12 characters
• Recommended: 16 or more characters
• For critical accounts (email, banking): 20+ characters

2. Use a Passphrase Instead of a Password

A passphrase is a sequence of random, unrelated words. It is easier to remember and harder to crack than a traditional password.

Good passphrases:

• umbrella-violin-mercury-shelf
• correct horse battery staple
• frozen+tulip+radar+genuine+maple

Bad passphrases:

• i-love-my-dog (too predictable)
• the-quick-brown-fox (well-known phrase)
• january-february-march (sequential pattern)

Pick 4-6 random words. If you want, add a number or symbol between them. The randomness of the word choices is what matters.

3. Never Reuse Passwords

When one service gets breached, attackers immediately try those credentials on other sites. This technique — called credential stuffing — is one of the most common attack methods. If you reuse passwords, a single breach compromises every account that shares it.

4. Avoid Personal Information

Attackers know your name, birthday, pet's name, and hometown. Social media makes this trivially easy to find. Never include:

• Your name or family member names
• Birthdays or anniversaries
• Phone numbers or addresses
• Favorite sports teams or bands
• Any information findable on your social profiles

5. Do Not Use Common Substitutions Alone

Replacing "a" with "@" or "o" with "0" feels clever, but password-cracking tools have included these substitution patterns for over a decade. P@ssw0rd is barely stronger than Password.

Substitutions are fine as an addition to an already-long password, but they should not be your primary strategy.

Common Mistakes to Avoid

Mistake	Why It Is Dangerous
Using 123456 or password	First entries in every cracking dictionary
Adding just 1 or ! at the end	Cracking tools test these patterns by default
Using the same password everywhere	One breach exposes all accounts
Writing passwords on sticky notes	Physical access = full access
Sharing passwords in plain text via Messenger or iMessage	Chat histories persist and can be accessed by others

That last point is worth emphasizing. Many people share passwords through messaging apps without thinking about where that text ends up. If you need to share a password, use a tool like LOCK.PUB to create a password-protected memo with an expiration time. The password never sits permanently in anyone's chat history.

How to Remember Strong Passwords

The Story Method

Build a mental image around your passphrase. For umbrella-violin-mercury-shelf, imagine an umbrella resting on a violin, sitting on a shelf, inside a mercury-colored room. The more vivid the picture, the easier it sticks.

The Base Password Method

Create a strong base and modify it for each service:

1. Start with a passphrase: frozen+tulip+radar
2. Add a service-specific tag: frozen+tulip+radar+BK (for banking)
3. Include a position marker: frozen+tulip+radar+BK7

This is better than reusing one password, but a dedicated password manager is still the safest option.

Use a Password Manager

A password manager generates, stores, and autofills unique passwords for every account. You only need to remember one master password.

Popular options include 1Password, Bitwarden, and the password managers built into Chrome, Safari, and Firefox.

Test Your Password Strength

Several reputable tools let you estimate password strength:

• Bitwarden Password Strength Tester — Estimates crack time using the zxcvbn algorithm
• Security.org How Secure Is My Password — Quick entropy estimate
• 1Password Password Generator — Generates strong passwords and shows strength ratings

Never enter your actual password into an online checker. Use a similar pattern to gauge the strength, then create your real password offline.

When You Need to Share a Password

Sometimes sharing a password is unavoidable — a shared streaming account, a team Wi-Fi network, or project credentials. When that happens:

1. Never paste it directly into a chat message
2. Use a password-protected, expiring link — Services like LOCK.PUB let you wrap a password in a secret memo that self-destructs after a set time
3. Change the password after the need has passed

Quick Checklist

Use this checklist for every new password you create:

• At least 12 characters (16+ preferred)
• No personal information
• Not used on any other account
• Not a common word or phrase
• Stored in a password manager or memorized via a method
• Shared only through secure, expiring channels

Start Protecting Your Accounts

A strong password takes less than a minute to create and can save you from months of damage. If you need to share credentials securely, create a secret memo on LOCK.PUB with an expiration time — the password disappears when you decide.

Create a Secret Memo -->