What never to send in chat · 跟马丁学编程

Chat is not a vault

In chat things get copied, forwarded, saved as a screenshot. Even if “I will delete it in a second”. Even if “just between us”. That is why there is a list of things you never send — not to a friend, not to “support”, not to a teacher in a private message outside the school system, unless it is an approved channel.

Never send:

A password — to school, a game, email, the vault.
An SMS code — 2FA, recovery, “verification”.
A PIN of the phone or a bank card (you do not deal with a parent’s on your own).
A photo of an ID, a lunch ticket, a ticket with a name and a barcode.
Someone else’s personal detail without permission.
A screenshot of sign-in, where a password or a session is visible.
“Just for a while” access — “here is the mail and the password”.

When someone wants something from the list, the answer is no. You show a parent.

💡

“Just for a second” in chat = forever in history. A friend can be fine. A friend’s phone can be unlocked with someone else. You do not take the risk.

Exceptions — only with a parent, not in chat

A parent says a password out loud at the table.
A teacher in the official school system — not on personal Instagram.
The vault — a parent saves passwords, they do not send them into WhatsApp.

If a teacher writes weirdly outside school, you show a parent. You check at school.

What to say

“发送 the password, the teacher wants it.”

“A teacher does not want it in Discord. I will go to them at school.”

“Just a screenshot of the lock screen with codes.”

“I do not photograph codes. If it is real, a parent will deal with it.”

“We will delete it immediately.”

“I do not send it. Deleting does not bring back whoever already saved it.”

How it fits the projects

🏠 Family rules. A list of seven sentences — shortened on the fridge: 密码, code, PIN not into chat.

🏫 Campaign. A poster for the class: the same list with three icons (a key, SMS, a photo).

👤 Safer profile. A contact you would not send in chat to a stranger does not belong on a profile — the same logic.

Now you 💪

Go through the last ten messages you sent (with a parent). Is there something from the list? If yes — deleting is not enough. Tell a parent. Change the password if it leaked.

Ten messages — together is fine. No blame. You are looking for learning.
One rule the family says out loud: seven things not into chat.
Into the vault — not into chat. If a parent sends a password into Facebook, warn them. It holds for everyone.

✅

Check: You know the list of seven things. “Just for a while” = no. A parent not into groups either.

What to take from this lesson

Chat remembers. A screenshot too.
A password, an SMS code, a PIN = never.
A teacher through an official channel, not Discord.
A parent at the table, not family WhatsApp with passwords.