Children use apps, games, shared devices, and online videos earlier than many adults expect. That means they can also start sharing personal information before they fully understand what should stay private and why it matters. UK child-safety guidance consistently treats this as a core online-safety issue for younger children.
For children aged 5–10, this does not need to become a frightening conversation. It needs to become a clear, repeated, calm one. Parents, carers, teachers, and schools can help children learn that some information is fine to share and some information should stay private unless a Safe Adult says otherwise.
What counts as personal information online?
Many children hear the phrase “personal information” but do not really know what it means. Trusted online-safety guidance explains that personal information can include a child’s full name, home address, school name, phone number, passwords, age, date of birth, photos, email address, and live location. In practice, it is any detail that helps identify them, contact them, or track them in the real world.
For younger children, it helps to break this down into simple examples:
- full name
- home address
- school name
- phone number
- passwords
- birthday
- photos or videos showing where they are
- usernames that reveal who they are
- live location or where they go after school
Why children need help with this
Children do not always see risk the way adults do. A child might think sharing their first name, school jumper in a photo, gaming username, or a picture outside their house is harmless. The problem is that small details can build a bigger picture. That is why online-safety organisations keep focusing on privacy, oversharing, and account protection as practical early lessons for children.
This matters in everyday situations such as:
- joining a game
- chatting in an app
- filling in a profile
- entering a competition
- posting a photo
- using a shared family device
- talking to someone they only know online
A simple rule children can remember
You do not need a long lecture. Give children one clear rule:
If a detail helps someone know who you are, where you are, or how to contact you, check with a Safe Adult before sharing it online.
That is much easier for a child to hold onto than a long list of internet dangers. It also supports the wider safeguarding habit of pausing, checking, and asking for help.
How to explain private and public information
One useful way to teach this is to sort information into two groups: public and private.
Public information
This might include:
- a nickname approved by an adult
- favourite colour
- favourite animal
- a game they like
- a cartoon character they enjoy
Private information
This includes:
- full name
- address
- school name
- phone number
- passwords
- birthday
- photos that show where they live or go
- anything a Safe Adult has said should stay private
This kind of sorting exercise works well both at home and in classrooms because it turns an abstract safety message into something concrete and memorable. That is far more useful than simply telling a child to “be careful online.”
Teach children that passwords are private too
Children often understand that a home address is private, but they may not see a password the same way. They might share it with a friend, sibling, or someone in a game because it feels like a sign of trust. That is a mistake.
Children should learn that passwords are private information and should only be shared with a parent or Safe Adult when needed. They should also know that if somebody asks for a password online, that is a warning sign.
A practical rule is:
- passwords are not for friends
- passwords are not for online chats
- passwords are not for “proving” friendship
- passwords are for Safe Adults helping keep accounts safe
Photos can reveal more than children realise
A child may think, “It is only a photo.” But photos can reveal uniforms, house numbers, street names, school badges, car registration plates, favourite routes, and regular places they visit. Even when a child does not type personal information, an image can still give it away.
This is why children need help looking at pictures more carefully before sharing them. Ask simple questions such as:
- Does this photo show your school?
- Does it show where you live?
- Can people see your name?
- Does it show where you are right now?
That kind of checking builds awareness without creating panic.
Use games, apps, and chats as teaching moments
This lesson works best when it happens during normal device use, not as a one-off talk. If a child is setting up a profile, choosing a username, or uploading a picture, pause and talk through it together.
You can ask:
- Does this app need that information?
- Should this be private?
- Is this username giving away too much?
- Who can see this?
- Shall we check the privacy settings together?
That is far stronger than trying to teach online safety in theory and then hoping the child applies it later.
What parents and schools should model
Adults undermine the lesson if they tell children to protect private information but then overshare about them online, use weak privacy settings, or post identifying photos without thinking. Children notice what adults do.
Parents and schools should model safer habits by:
- checking privacy settings
- limiting identifying details in shared photos
- using child-appropriate usernames
- avoiding public posts that reveal too much
- showing children how to ask before sharing information
In schools, this also fits wider digital citizenship and safeguarding teaching. Children benefit when the same messages are reinforced at home and at school.
What to do if a child has already shared something private
Do not overreact. If a child thinks they will be blamed, they may hide it next time. The better response is calm action.
You can:
- thank them for telling you
- find out exactly what was shared
- remove or edit the content if possible
- change passwords if needed
- review privacy settings
- block or report where appropriate
- remind them they did the right thing by speaking up
The key message should be: “You are not in trouble. We fix it together.”
Simple phrases children can use
Children often need words they can actually say in the moment. Useful examples include:
- “I need to ask my adult first.”
- “I do not share that online.”
- “That is private.”
- “I am not allowed to give that out.”
- “I am going to leave this chat now.”
These short phrases help children act safely without needing to explain too much.
Final thoughts
Teaching children about personal information online is not about making them fearful of every app, game, or message. It is about helping them understand that some details should stay private, and that checking with a Safe Adult is a smart habit, not a punishment. Trusted UK online-safety guidance continues to treat privacy, oversharing, and account protection as essential early lessons because they reduce risk before bigger problems begin.
When adults keep the message simple, repeat it often, and model it properly, children are much more likely to carry that habit into everyday online life. That is the real goal.
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