How to Generate a Strong Password

What makes a password strong

Password strength is about entropy — the number of possible combinations an attacker would need to guess. Two factors determine this:

1. Length: Each additional character multiplies the number of possible combinations. A 12-character password has exponentially more possibilities than an 8-character one.
2. Character variety: Using uppercase, lowercase, numbers, and symbols increases the pool of possible characters at each position.

Of these two, length matters more. A 16-character password using only lowercase letters is stronger than an 8-character password using all character types.

Complexity rules are outdated

You've seen the requirements: "must contain uppercase, lowercase, number, and symbol." These rules were recommended years ago, but they have a side effect: they produce passwords like P@ssw0rd1! — technically compliant but predictable. Attackers know these patterns.

A better approach: generate a longer password (12–16 characters) using a random mix of character types. It's both stronger and easier to type than a short, complex one.

Random vs. memorable passwords

Random passwords

Strings like k7$mN2!xQ9@pL4 are strong but hard to remember. These are best used with a password manager, which stores them securely and fills them in for you.

Passphrases

A passphrase combines several random words: correct horse battery staple. It's long (which makes it strong), easier to remember than random characters, and faster to type. The key is that the words must be truly random — not a phrase you'd find in a sentence.

Practical recommendations

• Use a password manager. It generates and remembers unique, random passwords for every account. You only need to remember one strong master password.
• Never reuse passwords. If one service is breached, reused passwords put your other accounts at risk.
• Enable two-factor authentication wherever available. Even a strong password benefits from a second layer of protection.
• Avoid personal information. Names, birthdays, and favorite teams are easy to find and guess.

Step-by-step: generating a strong password

1. Set the length to at least 12 characters (16 is better for important accounts).
2. Include multiple character types — uppercase, lowercase, numbers, and symbols.
3. Generate randomly — use a tool that produces truly random output, not a pattern you create yourself.
4. Store it securely — in a password manager, not in a text file or sticky note.