Online Defamation Law Explained

Online defamation is one of the most misunderstood corners of business law. A one-star Google review calling you a "scam" is not automatically defamation. A blog post claiming you were arrested when you were not almost certainly is. The line between a protected opinion and an actionable false statement of fact is where most business owners get stuck, and where most reputation damage happens. This piece walks through what actually counts as defamation in 2026, what your options are, and what the legal system will not do for you.

The definition that matters

Defamation is a false statement of fact, published to a third party, that causes measurable harm to reputation. Every word in that sentence carries weight. "False" rules out truthful statements, even harsh ones. "Fact" rules out opinions, hyperbole, and satire. "Published to a third party" means it was seen by someone other than the person it targets. "Measurable harm" means you can point to lost business, canceled contracts, or a documented reputational hit.

The two flavours are libel (written or otherwise fixed) and slander (spoken and transient). Almost everything online is libel, because a Google review, tweet, or Trustpilot comment persists in a fixed medium. That distinction matters because libel is generally treated more seriously in court.

Opinion vs fact - the line most reviews sit on

"This restaurant is the worst in town" is an opinion. "This restaurant served me undercooked chicken and I got food poisoning" is a factual claim that can be true or false. The first is protected speech in most jurisdictions. The second is only defamation if it did not happen and the reviewer knew it. Courts look at context, phrasing, and whether an ordinary reader would take the statement as a personal view or a report of fact.

Where reviewers get in trouble is dressing false facts as opinion. "In my opinion, this dentist has no licence" does not become opinion because of the preamble. The underlying claim is checkable and, if false, actionable.

Public figures face a higher bar

If your business is a household name or you personally have chosen public life, the standard shifts. In the United States, public figures must prove "actual malice", meaning the speaker knew the statement was false or acted with reckless disregard for the truth. In the UK, Australia, and Canada, the tests differ but the trend is similar: the more public you are, the harder it is to win a defamation case. A small local plumber has an easier path than a nationally advertised franchise.

What courts will actually do

If you win a defamation case, courts can order the defendant to pay damages, remove the content, and sometimes issue a public correction. What they will not do is force Google, Trustpilot, or another platform to remove third-party content on their own initiative. Platforms in the US are shielded by Section 230 of the Communications Decency Act, and equivalents elsewhere. You typically need a court order naming the specific URL and the specific defamatory statement before a platform will act, and even then response times vary.

This is why filing a case is often only the start. The judgment gives you leverage, but enforcement, especially against anonymous posters or offshore hosts, is its own project.

The practical playbook

• Document everything. Screenshots with timestamps, URLs, and any correspondence with the poster. Evidence disappears when accounts get deleted.
• Send a preservation letter. A formal request to the platform to preserve the content and account data, sent through a lawyer, protects your case if the poster later scrubs their trail.
• Try the platform's own process first. Google, Trustpilot, and Yelp have defamation and fake-review reporting flows. Many false claims come down at this stage without litigation.
• Get a lawyer's letter to the poster. A cease-and-desist from counsel resolves a majority of disputes without court.
• File suit only when the damage is real and provable. Litigation is slow and expensive. Reserve it for cases where the statement is clearly false, clearly harmful, and clearly traceable to someone with assets or reputation to protect.

What about anonymous reviews

You can subpoena a platform to unmask an anonymous reviewer, but the bar is high. You must first show your case has merit, which usually means filing a "John Doe" complaint and surviving an early motion. Some jurisdictions require the platform to notify the anonymous user, who can then fight the subpoena. Budget six to twelve months just for identification, before the substantive case even starts.

The alternative most businesses use

Legal action is one tool. For most false or damaging content, businesses combine platform reporting, professional removal services that work through official channels, and content burial through positive SEO. The goal is to make the damaging item invisible, not to win in court. That is often faster, cheaper, and more effective than a defamation case, especially when the poster is anonymous, judgment-proof, or offshore.

The bottom line

Defamation law protects businesses from provable, damaging lies. It does not protect them from harsh opinions, honest criticism, or general internet negativity. Before you spend money on a lawyer, ask three questions: is the statement a fact rather than an opinion, is it demonstrably false, and can you show real harm. If the answer to all three is yes, you have a case worth exploring. If any one is no, put your budget into fixing the underlying problem and rebuilding reputation the long way. That is not the answer people want to hear, but it is the one that works.

Frequently Asked Questions

What legally counts as online defamation?

Online defamation is a false statement of fact, published to a third party, that causes measurable harm to reputation. Opinions, hyperbole, or truthful but harsh statements are typically not considered defamation. The key is proving the statement is factually incorrect and caused tangible damage.

Is a negative online review always defamation?

No, a negative online review is not automatically defamation. It is only defamation if it contains a false statement of fact that harms your reputation. An opinion, like "This is the worst restaurant," is protected. A false factual claim, such as "This restaurant served expired food," could be defamatory if untrue.

Can I force a platform like Google to remove a defamatory review?

Generally, no. Platforms like Google or Trustpilot are protected by laws like Section 230 in the US, shielding them from liability for third-party content. You typically need a court order specifically naming the defamatory URL and statement, directed at the defamer, before a platform might consider removal.

What is the difference between libel and slander in online contexts?

Libel refers to defamatory statements in a fixed medium, such as written text on a website, a social media post, or a video. Slander refers to spoken, transient defamation. Almost all online defamation is considered libel because digital content persists and can be accessed repeatedly.

Do public figures have a harder time winning defamation cases?

Yes, public figures generally face a higher legal bar in defamation cases. In the US, they must prove "actual malice" – that the speaker knew the statement was false or acted with reckless disregard for its truth. Other countries have similar increased thresholds, making it more challenging for public individuals to succeed.