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Chapter 5: Being a Cyber-Smart Citizen

Protect yourself, protect others.

You have learned how devices talk, how information is protected, how to spot threats, and how layers keep systems safe. Now for the most important part: people.

A citizen is a member of a community who helps take care of it. Online, you are part of a huge community too. A cyber-smart citizen protects their own information, stands up for others, checks before believing or sharing, and follows the rules that keep everyone safe. In this final chapter, you will learn how to do all four. By the end, you will be a true Cyber Defender.


When you walk across wet sand at the beach, you leave footprints behind you. Online, you leave footprints too, and they are much harder to wash away.

Your digital footprintdigital footprint: The trail of information you leave behind whenever you use the internet, including what you post, search, watch, and share. is the trail of information you leave behind whenever you use the internet. Some of it you leave on purpose. Some of it you might not notice at all:

On Purpose Without Noticing
A comment on a video The videos an app records that you watched
A drawing you posted to a class page Your location saved in a photo
A username you chose for a game The searches you typed
A message in a group chat How long you spent on each app

Every action online adds a step to your footprint. Apps, websites, and games collect these steps, and together they paint a picture of who you are and what you like.

Here is the tricky part. Online information can last a very long time. A friend can screenshot a message in one second. A post can be copied and shared to people you’ve never met. Even if you delete something, copies might still exist somewhere.

That means a silly or unkind post today could be seen years from now by a teacher, a coach, or someone deciding whether to give you a job. It could hurt your reputation, and it could hurt someone else’s. Before you post, ask: “Would I be OK with this being seen by everyone, forever?”

Some information is extra important to protect. Personally identifiable information (PII)Personally identifiable information (PII): Information that can be used to figure out exactly who you are or where to find you, like your full name, address, or birthday. is information that can be used to figure out exactly who you are or where to find you:

  • 🏷️ Full name
  • 🏠 Home address
  • 📞 Phone number
  • 🎂 Birthday
  • 🏫 School name
  • 🔑 Passwords
  • 📷 Photos that show your house number, school logo, or street sign

To keep PII safe: use a nickname instead of your real name in games, turn off location in photos (ask a grown-up to help), check privacy settings with a family member, and never share PII with someone you only know online. When in doubt, leave it out.


Everyone has bad days. Sometimes people say something unkind without thinking. That’s not okay, but it’s also not always bullying. Knowing the difference helps you respond the right way.

CyberbullyingCyberbullying: Using technology to hurt, scare, or embarrass someone on purpose, usually again and again. is using technology to hurt, scare, or embarrass someone on purpose, usually again and again. A single unkind act is hurtful, but it happens once. Cyberbullying keeps going, or spreads to lots of people.

A Single Unkind Act Cyberbullying
One mean comment in a game, then it stops Mean messages every day in a group chat
A friend says something rude, then apologizes Someone keeps leaving someone out on purpose, in every game
A joke that went too far once Sharing an embarrassing photo so lots of people laugh at it
An argument between equals A group ganging up on one person

Cyberbullying can happen anywhere people connect: video games, group chats, video comments, class websites, and messaging apps. It can even follow someone from one app to another. Because a screen never closes, it can feel like there’s no escape. That’s why it matters so much to stop it.

When someone sees bullying and does nothing, they are a bystanderbystander: Someone who sees bullying or unkindness happen but does nothing to help.. When someone sees bullying and takes a safe action to help, they are an upstanderupstander: Someone who sees bullying or unkindness and takes safe action to help the person being hurt.. You don’t need to be a superhero to be an upstander. Small actions are powerful:

  1. Don’t join in. No laughing emojis, no likes, no sharing.
  2. Don’t forward it. The chain stops with you.
  3. Reach out privately to the person being hurt: “That wasn’t okay. Are you alright?”
  4. Tell a trusted grown-up, like a parent, teacher, or school counselor.
  5. Save proof. With a grown-up’s help, take a screenshot before anything is deleted.
  6. Use report and block tools, with a grown-up, on the app or game.

You don’t have to argue with the bully online. Arguing often makes things worse. The strongest moves are supporting the person who was hurt and getting a grown-up involved.


For a long time, people said, “Seeing is believing.” That’s not true anymore.

AI tools can now generate pictures that look like real photos, copy a person’s voice from short recordings, and make videos of people doing or saying things they never did. Media made this way is called synthetic media. When it’s used to make a fake version of a real person, it’s often called a deepfakedeepfake: A fake picture, video, or voice recording made with AI to look or sound like a real person..

AI-made media can be used for fun and creativity, like a movie’s special effects or a cartoon. But it can also be used to:

  • Impersonate people: a fake voice message that sounds like a family member asking for help, or a fake video of a famous person.
  • Spread false information: a realistic picture of an event that never happened, like a fake disaster or a fake celebrity announcement.
  • Embarrass or bully someone: a fake picture of a classmate. That’s a form of cyberbullying, and it can be against the law.

Spotting fakes by looking for mistakes, like extra fingers, is getting harder as AI improves. The best strategy is to check where it came from:

Step What to Do
Slow down Strong feelings, like shock or anger, are a sign to pause.
Trace the source Who first posted it? A trusted news group, or a random account?
Other sources Do trusted news sites, or the real person’s official page, show the same thing?
Pull in a grown-up Ask a parent or teacher before believing or sharing.

Some cameras and AI tools now add special labels, called content credentials, that show how a picture was made or edited. Some apps also mark posts as “AI-generated.” Labels help, but not everything has one, so the STOP strategy is still your best tool.


Sports have rules so the game is fair and nobody gets hurt. The online world has rules too, and some of them are laws.

Laws are created when people see a problem that needs a fair, clear answer for everyone. Online laws help:

  • Protect kids’ privacy. In the United States, a law called COPPA says that websites and apps aimed at children under 13 must get a parent’s permission before collecting kids’ personal information. That’s why many apps say you must be 13 or older to sign up.
  • Stop break-ins. Laws make it a crime to get into someone else’s computer or account without permission. Remember, permission is the difference between an ethical hacker and a criminal.
  • Protect people from harm, like scams, stolen identities, and serious harassment.

When someone creates something, like a song, a drawing, a story, or a video, they automatically own the copyrightcopyright: The legal right of a creator to decide how their original work is copied, shared, or used. to it. That means they decide how it can be copied and shared. Copying someone’s whole song or drawing and calling it yours isn’t fair to them.

But there’s an important exception. Fair useFair use: A rule that lets people use small parts of copyrighted work, without asking, for purposes like school reports, reviews, and news. lets people use small parts of copyrighted work without asking, for purposes like school reports, reviews, teaching, and news. Using one picture of a famous painting in your report about the artist is usually fair use. Copying a whole book into your project is not.

Smart habits:

  • Use small parts, only what you need.
  • Give credit: write who made it and where you found it. (Credit is respectful, but it doesn’t make copying a whole work okay.)
  • Look for public domain works, which are free for anyone, and Creative Commons works, which creators share with their own rules.
  • Make your own original work. It’s yours to protect!

When a family member signs you up for an app, they click “I agree” to the terms of serviceterms of service: The rules an app or website makes you agree to before you can use it, such as age limits and what you can post., the rules for using it. These agreements explain age limits, what you’re allowed to post, and what the company does with information. Apps also have a privacy policy that explains what data they collect.

Your school probably has one too, often called an Acceptable Use Policy (AUP). It’s an agreement about how students use school devices and networks: no sharing passwords, no unapproved apps, be kind online. Signing it is a promise, and following it keeps the whole school safer.


Chapter 5 Activity: The Cyber Defender Pledge! 🛡️

Section titled “Chapter 5 Activity: The Cyber Defender Pledge! 🛡️”

Your Mission: Show everything you’ve learned, and promise to use it.

Draw a big footprint. Inside, write five things that would make a positive digital footprint (like kind comments or a great school project). Outside, write three things you would never post, with a reason for each.

In small groups, your teacher will give you scenario cards, like “A group chat keeps making fun of one student,” “A shocking video of a famous person is going around,” or “You want to use a song in your class video.” For each card, decide: Is it about footprints, bullying, fake media, or rules? What would a cyber-smart citizen do?

Write your own Cyber Defender Pledge with five promises, one from each chapter of this book. Start each promise with “I will.” Sign it, decorate it, and share it with your family.


  • I can explain how my online actions create a digital footprint
  • I can describe why digital information can last forever and how it could harm someone’s reputation
  • I can list examples of PII and ways to keep it safe
  • I can tell the difference between cyberbullying and a single unkind act
  • I can name at least four upstander actions
  • I can describe how AI can make realistic pictures, voices, and videos, and how they can be misused
  • I can use the STOP strategy to check whether content might be fake
  • I can explain why online laws like COPPA exist
  • I can explain copyright and fair use and give credit correctly
  • I can explain what terms of service and an Acceptable Use Policy are for