What leet speak is
Leet (also written 1337, 31337 or "elite") is a writing style born in BBSes and hacker forums between the 80s and 90s. It replaces letters with numbers or symbols that look similar: A becomes 4, E becomes 3, I becomes 1, O becomes 0, T becomes 7. The word "leet" itself is written "1337".
Origin and culture
It started as a way to dodge automatic word filters in forums, communicate in code among the technical "elite" of early BBSes and eventually as a marker of geek belonging. By the 2000s it was part of internet folklore, especially in gaming (Counter-Strike, MMORPGs) and hacker communities. Today it survives more as nostalgia and meme than as a functional tool.
Most common substitutions
- A → 4 (or @)
- B → 8
- E → 3
- G → 6 (or 9)
- I → 1 (or !)
- L → 1 (or |_)
- O → 0
- S → 5 ($ in hardcore)
- T → 7
- Z → 2
Soft and hardcore modes
In soft mode the text stays readable: only the most obvious substitutions, no weird symbols, regular case. Ideal for nicknames, titles and memes that need to be parsed by the audience. In hardcore, we apply aggressive substitutions with symbols, mixed case and extreme combinations — the result is almost illegible and very retro.
Modern use cases
- Gaming nicknames — "Pr0Pl4y3r", "N0t_T0d4y_1337".
- Memes — instant 2000s geek-culture reference.
- Retro logos and branding — gaming startups, esports, cybersecurity.
- Passwords (carefully) — leet substitutions add minimal entropy.
- Birthday cards and geek messages — a touch for the nerdy friend.
Why NOT to use leet for passwords
It's a common myth that writing a password in leet makes it safer. It doesn't: modern attack dictionaries automatically try every leet variant of every word. If your password is "p4ssw0rd", it cracks just as fast as "password" — milliseconds. For real security, use long random passphrases or a password manager. For fun and aesthetic, leet is still cool.
Leet generations
There's an unwritten hierarchy: "novice" leet uses only 3-4 substitutions; "intermediate" adds @ and $; "elite" leet adds composite symbols like |\\| (for N), |\\/| (for M), or stacks every form inside a single word. Nobody takes this seriously today, but the hierarchy existed (and still does in niche communities).