Explain like I'm five · Security

What is a Password?

Passwords, told as a story about the secret word you whisper to the gatekeeper.

Password?Apple!MY GUESSESapple?pear?grape?1234?I will just try them alla short password takes only a few guesses

The gatekeeper asks for the password. The thief tries to guess it, one word at a time.If the word is something short like Apple, the thief gets it in a few tries. Thieves don't get tired.

appletoo short:guessed in a secondappleappleapplesame one everywhere:one leak opens them allLEAKED LISTapple1234passwordtoo common:the thief already has a listshort, repeated, or common — thieves love all three

A short word is guessed fast; the same word everywhere means one leak opens every door.And the thief already owns a list of the words everyone uses. Apple, 1234, and password sit right at the top.

purple whale bakes breadwhispered, very quietly…what was that?a million years to guesslong, different at every door, kept in a box, told to no onea password is a word only the gatekeeper and I know

A password is the secret word you whisper to the gatekeeper.Only the gatekeeper and I know it. Long, different at every door, kept in a box, and told to no one.

Make it a sentenceeasy to remember, hard to guess
Different at every doorone leak, one door
Keep them in a locked boxremember only the box key
Tell no oneeven the gatekeeper never asks twice
Gatepurple whalebakes breadStoreroomyellow frogplays a fluteWell3 potatoesdancinga different password for every door, inside the boxI remember one key, for the boxthe box key = my longest onea new door?the box invents a new oneone to remember, even with a hundred doors

The words live in a locked box, and I remember only the key to the box.A hundred doors, one thing to remember. For a new door the box invents a long strange word, and hands it to me every time I go.

LEAKED PASSWORDSapple · 1234password · apple1yellow frog plays……mine is on it — time to changeon the list? change that door's word417 293the word alone won't open itthe ring and the phone code tooa password is one lock — a good gatekeeper asks for one more

If it leaks, change that door's word. And a good gatekeeper asks for one thing more.If my word shows up on the leaked list, I change only that door — every door has its own. The gatekeeper also checks one more thing, or looks at a ring instead.

In one breath

Password = a whispered word only the gatekeeper and I know. Long, different at every door, kept in a locked box, and told to no one.

A secret string that proves I am me. Short, reused, or common passwords fall quickly to brute force and credential stuffing. Passphrases, password managers, and MFA cover those weak spots.

When grown-ups say it

Passphrase
A password that is a sentence. Purple whale bakes bread. Easy to remember, far harder to guess — length beats weird characters.
Password manager
The locked key box. Invents and remembers a long, different password for every door. I remember only the box key — the master password.
Password reuse
The same word at every door. Leak it at one castle and every other gate opens too. The first thing a thief tries.
Credential stuffing
Trying a leaked list at every gate. A list of names and words leaked elsewhere, tried one by one at our gate. Not reusing passwords stops it cold. → the thief with a thousand keys
Hashing
The gatekeeper writes down a fingerprint, not the word. Even the gatekeeper never writes the word itself — only its fingerprint, compared when I speak. → a fingerprint for everything
MFA
One more thing besides the word. The ring or the phone code, asked along with the word. A leaked word still opens nothing. → the gatekeeper who checks three times
Passkey
A ring instead of a word. Nothing to remember, nothing to whisper — nothing to leak. → the ring that knows its gate
Breach check
Reading the leaked list. Services like Have I Been Pwned tell you if your word is on a leaked list. If it is, change that one door.
Next story
The ID Card with the King's Seal →
Want another term as a picture book? Request →