L33t-PASS.org

Type a phrase or generate 3 words

Get 3 secure variants with numbers-for-letters

clean symbols • one-click copy

0 = conservative • 3 = aggressive
Prepended/appended randomly to each variant
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Pro tip: Use a password manager + 2FA. This tool focuses on memorability with improved strength — avoid reusing the same variant across sites.

Leet speak (or "1337") is a form of writing that replaces letters with numbers and symbols that look similar. It originated in the 1980s hacker culture and is still used today for creating memorable yet secure passwords.

History & Origins:

• Born in 1980s BBS (Bulletin Board System) communities

• Used by early hackers to avoid automated text filters

• "1337" comes from "LEET" (elite) - the highest rank in online games

• Evolved from simple number substitutions to complex symbol systems

Examples:

• password → p@55w0rd or p4ssw0rd

• hello → h3ll0 or h3llo

• security → 53cur1ty or s3cur1ty

Fun Codebreaking Facts:

• The Enigma machine used similar substitution principles in WWII

• Ancient Romans used "leet-like" number substitutions (VII = 7)

• Modern CAPTCHAs use similar visual substitution challenges

• The word "hacker" itself comes from MIT's "hack" culture in the 1960s

Why use leet speak for passwords?

• Makes passwords harder to guess while keeping them memorable

• Adds complexity without being too difficult to type

• Helps meet password requirements for numbers and symbols

• Creates unique variants for different sites

This tool generates 3 different leet variants of your input, each with different substitution levels and random additions to maximize security while maintaining memorability.