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Chapter 4: Harm Online – Harassment, Misinformation, and the Upstander

Harassment, Misinformation, and the Upstander

For all its good, the internet can be a genuinely harmful place. The same features that let people connect and share — scale, speed, anonymity, and algorithms that reward strong reactions — also make it possible to hurt people faster and more widely than ever before. Cruelty can be crowdsourced. A lie can circle the world before the truth gets out of bed. A single manipulated video can damage a reputation in hours.

This is the hardest chapter in the book, because it deals with the ways online life goes wrong: harassment, the deliberate spread of falsehoods, and the manufactured reality of deepfakes. But it’s also the most empowering, because the central lesson is that you are not helpless. In almost every online harm, there are bystanders — and bystanders can choose to become something better. Understanding how harm spreads is the first step to refusing to be part of it.


4.1 — The Many Faces of Online Harassment 😠

Section titled “4.1 — The Many Faces of Online Harassment 😠”

cyberbullyingcyberbullying: The use of digital technology to repeatedly harass, threaten, embarrass, or target another person. Because it can follow someone home and reach a wide audience, it can be especially relentless. — using digital tools to repeatedly harass, threaten, or humiliate someone — is one of the most serious harms of online life, and it wears many faces. Because a phone comes home with you, cyberbullying can be relentless in a way schoolyard bullying never was: there’s no safe place, no end of the day, and often a large audience.

It’s worth naming its specific forms, because recognizing them is the first defense:

  • Flaming and trolling — deliberately posting cruel or inflammatory messages to provoke a reaction.
  • Harassment — repeated, targeted messages meant to distress someone.
  • Exclusion — intentionally leaving someone out of a group chat or online space to hurt them.
  • Outing — sharing someone’s private information or secrets without consent.
  • doxxingdoxxing: Publishing someone's private personal information online — such as their home address, phone number, or workplace — without consent, usually to enable harassment or intimidation. — publishing someone’s private information (address, phone number, school) to expose them to harassment, one of the most dangerous forms because it can move harm into the physical world.
  • Pile-ons — a crowd descending on one person all at once, so that each “small” comment adds up to overwhelming abuse.

If you’re targeted: don’t retaliate (it usually escalates), save the evidence (screenshots with dates), block and report through the platform’s tools, and tell a trusted adult. Reaching out for help is not weakness — serious harassment is something no one should handle alone, and in many places it’s also illegal.


4.2 — Being an Upstander, Not a Bystander 🦸

Section titled “4.2 — Being an Upstander, Not a Bystander 🦸”

Most online harm has an audience. When a pile-on happens, far more people watch than participate — and what those watchers do matters enormously. This is where you have real power.

A bystanderbystander: Someone who witnesses harm — such as online harassment — but does not act, whether from fear, indifference, or uncertainty about what to do. witnesses harm and stays silent. An upstanderupstander: Someone who witnesses harm and chooses to act — by supporting the target, objecting to the behavior, reporting it, or refusing to amplify it. witnesses the same thing and acts. You don’t have to be a hero or start a fight to be an upstander. Small actions, multiplied, change what an online space tolerates:

  • Don’t amplify. The simplest upstander move is refusing to like, share, or pile on. Harm spreads because people boost it; you can starve it.
  • Support the target — even privately. A quiet “hey, that was uncalled for, are you okay?” DM tells someone they’re not alone. That matters more than you’d think.
  • Object, briefly. You don’t need a speech. “Not cool” or “leave them alone” from even one person can break a pile-on’s momentum and give others permission to speak up too.
  • Report it. Use the platform’s reporting tools. It feels small, but reports are how harmful content actually gets removed.
  • Don’t screenshot-and-spread “to raise awareness.” Sharing someone’s humiliation, even disapprovingly, usually just extends its reach. Report instead.

The research on this is encouraging: when even one bystander speaks up, others are far more likely to follow, and harassment often stops. Silence reads as approval. Your voice — or your deliberate refusal to amplify — is a real force.


4.3 — Misinformation and Disinformation 📰

Section titled “4.3 — Misinformation and Disinformation 📰”

Not all online harm is aimed at a person. Some of it targets the truth itself, and it spreads through ordinary people who share things in good faith. Two terms are essential, and the difference between them is intent:

  • misinformationmisinformation: False or misleading information that is spread without the intent to deceive — often shared by people who believe it's true. is false information spread without the intent to deceive — the friend who shares a fake health tip believing it’s real.
  • disinformationdisinformation: False information created and spread deliberately to deceive, manipulate, or cause harm — such as propaganda or a coordinated hoax. is false information created and spread deliberately to deceive or manipulate — propaganda, scams, coordinated hoaxes.

Here’s the uncomfortable part: false information often spreads faster than the truth. A landmark study of millions of posts found that falsehoods spread significantly farther and faster than accurate stories — largely because lies can be engineered to be more novel, more shocking, and more emotionally charged than reality. Algorithms amplify what gets reactions, and outrage gets reactions. The result is an environment where being a responsible sharer is a genuine skill.

When something makes you want to immediately share it — especially if it makes you angry or triumphant — that’s exactly the moment to slow down. A simple method called SIFT helps:

  • Stop. Notice the urge to react. Don’t share yet.
  • Investigate the source. Who’s actually behind this? A real news outlet, or an anonymous account?
  • Find better coverage. Are reputable sources reporting the same thing? Search it.
  • Trace claims back to the original context. Screenshots and clips are often stripped of the context that changes their meaning.

You don’t have to fact-check everything you read. But you are responsible for what you amplify. Sharing is a form of endorsement, and a moment’s check prevents you from becoming a link in a chain of harm.


4.4 — Deepfakes and Synthetic Reality 🎭

Section titled “4.4 — Deepfakes and Synthetic Reality 🎭”

The newest and most disorienting form of online falsehood is the deepfakedeepfake: Synthetic media — usually video, image, or audio — generated by AI to realistically depict a real person saying or doing something they never actually said or did. — AI-generated media that convincingly shows a real person saying or doing something they never did. What once required a Hollywood studio can now be done with an app, and the results are increasingly hard to distinguish from reality.

The netiquette and safety implications are serious:

  • Reputation and consent. Deepfakes have been used to put real people — including students — into fabricated images and videos they never consented to. Creating or sharing such content about someone is a profound violation, and in a growing number of places, a crime.
  • Fraud and manipulation. Voice-cloning scams imitate a family member’s voice to trick people; fake videos of public figures spread disinformation.
  • The “liar’s dividend.” Perhaps the strangest effect: once people know videos can be faked, bad actors can dismiss real evidence as “probably a deepfake.” When nothing can be trusted, the truth itself is weakened.

You can’t personally stop deepfake technology, but you can adopt the habits of someone who navigates it wisely: treat shocking media with healthy skepticism, especially before sharing; look for confirmation from reliable sources rather than trusting a single stunning clip; and understand that seeing is no longer automatically believing. Most importantly, never create or share non-consensual synthetic images of real people — a rule that isn’t just etiquette but, increasingly, law.


You’ll analyze how online harm spreads and practice the upstander and verification skills this chapter teaches.

Read this scenario: A classmate posts something awkward. Within an hour, a group chat is flooded with mocking screenshots, and more people keep joining in. Write out four specific, realistic upstander actions someone could take — at least one public and one private — using Section 4.2. For each, explain what harm it reduces.

Find a surprising or emotional claim circulating online (a viral post, a shocking statistic, a “news” screenshot). Run it through the SIFT steps and write up what you find: Who’s the source? Do reputable outlets confirm it? What’s the original context? Conclude whether you’d share it, and why.

Research one real, documented example of a deepfake or a piece of viral misinformation (a fake celebrity video, a manipulated image, a hoax that spread widely). In a short paragraph, describe how it fooled people, what damage it caused or could cause, and one sign that could have tipped off a careful viewer.

In a few sentences: Which is harder for you personally — resisting the urge to share something shocking, or speaking up when you see someone being piled on? Why, and what could help?


  • I can define cyberbullying and identify its different forms
  • I can explain why online harassment can be more relentless than in-person bullying
  • I can describe what to do if I’m targeted by harassment
  • I can define doxxing and explain why it’s especially dangerous
  • I can explain the difference between a bystander and an upstander
  • I can list concrete upstander actions that don’t require heroics
  • I can distinguish misinformation from disinformation by intent
  • I can explain why false information often spreads faster than the truth
  • I can apply the SIFT method before sharing something
  • I can define deepfakes and describe how to navigate a world of synthetic media responsibly