Think of something you posted a year ago that makes you cringe now. Deleted it? Good. Except deleting removes it from your page, not from the internet. Screenshots exist. Platforms keep data. Friends' phones keep copies. The trail you leave online is called your digital footprint, and it is made of two parts: the things you post on purpose, and the trail you leave without noticing, like location data, tagged photos other people took, and every account you have ever signed up for.
Why care? Because that footprint gets read by people you have not met yet. Sixth forms look. Apprenticeship employers look. And people with bad intentions look hardest of all, because your footprint tells them where you are, what you care about, and how to start a conversation with you.
Here is a made-up profile. Using only what is posted, work out everything you can about this person.
@kaykay_2013 · Bio: "Yr 8 🎶 dance + dogs"
Monday, 8:12am: photo in school uniform, blazer badge visible, caption "another week 😩"
Wednesday, 4:30pm: video at dance class, studio name on the wall behind her
Friday, 6:00pm: "home alone tonight, parents at wedding until late 🎉"
Saturday: photo outside her front door with her dog, house number visible, street sign in background
Quiz shared last week: "Your dancer name is your first pet + the street you grew up on!"
What do you now know? School, area, weekly routine, when the house is empty, and thanks to that quiz, two of the most common password recovery answers. Write down the three most dangerous posts and why:
| Leak | How it happens | The fix |
|---|---|---|
| Location | Not one big reveal, but small details adding up: uniforms, street signs, regular check-ins. | Location off by default. Look at photo backgrounds before posting. Never post "home alone". |
| Access | Shared passwords, usually with a best friend or partner. Friendships end. Passwords remember. | Passwords are like toothbrushes: yours, and not for sharing. Use different ones for different accounts. |
| Audience | Believing "private" means private. Screenshots exist, and followers of followers are strangers. | The test: would you be happy for your head of year and your nan to see it? If not, don't post it. |
AI can now fake photos, voices and videos well enough to fool almost anyone. That profile picture might be generated. That voice note might not be from your friend. So the new basic rule is: verify important things through a second route. If your "friend" messages asking for money or a password, ask them in person or ring them. If something seems off, it probably is. Trust the feeling and check.
1. Someone friendly in an online game asks which school you go to, "just wondering". What do you say?
2. A fun quiz asks for your date of birth, first pet and mum's maiden name. What is it really collecting?
3. Your friend's account sends you a weird link. What has probably happened, and what do you do?
Pick one and actually do it tonight: check your privacy settings on the app you use most, turn off location sharing, remove followers you don't actually know, or change a password you have shared with anyone. Then decide, right now, which adult you would tell if something online ever worried you. Write their name here:
Something online worrying you? Tell your trusted adult, today, however small it seems. Childline is free and confidential on 0800 1111. If anyone online is pressuring you about photos, meeting up or anything sexual, report it to CEOP at ceop.police.uk, where real specialist police officers read every report. And use the report and block buttons in the app. They exist for exactly this.