When Does an Online Review Cross the Line Into Defamation?

Hands holding a red folder labeled "Cease and Desist" with a pair of eyeglasses on top.

A customer leaves a one-star review after a disappointing dinner: “The service was

slow, and the meal was not worth the price.” The restaurant owner dislikes the criticism, but personal judgments like these are usually protected opinions.

Now change the review: “The owner steals customers’ credit card numbers.” If that accusation is false, the post presents a much different legal problem. The line between a harsh review and defamation often depends on whether the reviewer expressed an opinion or made a false statement that can be proven true or false.

A Negative Review Is Not Necessarily Defamatory

Under Illinois law, a defamation claim generally requires a false statement about a person or business, publication of that statement to someone else without privilege, and resulting harm.

A substantially true statement is generally not actionable, even if minor details are inaccurate. A review does not become defamatory simply because it is embarrassing, damaging, or unfairly worded. A customer can truthfully describe waiting an hour for an appointment or receiving the wrong order, even if the business believes the review leaves out important context.

Opinions also receive strong protection. Statements such as “the food was awful,” “the staff seemed rude,” or “I would never hire this contractor again” usually reflect personal reactions that cannot be objectively verified.

Adding “in my opinion” does not protect an otherwise factual accusation. A reviewer who writes, “In my opinion, the dentist billed me for work she never performed,” is still making a claim that records and testimony could prove or disprove.

Context and Specific Language Matter

Courts examine the entire post rather than isolating a few words. Exaggeration, sarcasm, and heated language can signal opinion. Specific allegations often sound more factual.

Consider these two statements:

  • “This mechanic is a crook.”
  • “This mechanic charged me for a new transmission but installed a used one.” The first could be interpreted as loose criticism, depending on the surrounding language. The second describes a specific transaction that can be investigated. If the reviewer invented the allegation, it presents a stronger basis for a defamation claim. Illinois courts have also rejected the idea that statements posted online are automatically treated as harmless hyperbole. In Hadley v. Subscriber Doe, the Illinois Supreme Court concluded that an anonymous internet comment could reasonably be understood as asserting a defamatory fact. The medium does not decide the issue; the words and context do.

Some Accusations Are Especially Serious

Illinois recognizes certain statements as defamatory per se, meaning damage to reputation is presumed if the required elements are established. Relevant categories include false accusations that someone committed a crime, lacks integrity in performing employment duties, or is unable to perform in a profession or business.

A fabricated review claiming that an accountant falsifies tax returns or that a contractor takes deposits and disappears could fall within these categories. Even then, the court considers whether the statement has a reasonable innocent meaning and whether it is protected opinion.

What If the Reviewer Is Anonymous?

A screen name does not necessarily prevent a claim. Illinois Supreme Court Rule 224 provides a procedure to identify a person who may be responsible for actionable conduct before filing suit. The person requesting the information must allege specific facts sufficient to state a legally valid defamation claim. Courts apply this requirement to protect anonymous speech while allowing potentially actionable claims to proceed.

To support that claim, businesses should preserve the complete review, URL, username, publication date, replies, and any records that contradict the accusation. Evidence of canceled appointments, lost customers, refund demands, or questions prompted by the review can also help document its effect.

Responding Without Making the Problem Worse

An angry public response can draw more attention to a review and create additional evidence. Before replying, demanding removal, or threatening suit, consider whether the post is factual, provably false, and causing meaningful harm. Illinois’s anti-SLAPP law can also create dismissal and attorney-fee risks in cases involving protected speech, so the legal basis for a lawsuit should be evaluated before filing.

Timing matters as well. Illinois generally allows one year to file a defamation action.

Two individuals at a desk reviewing a document, with a gavel and scales of justice nearby.

Discuss Your Options Before Responding

The Russell Firm evaluates online reviews in their full context, including the reviewer’s wording, available records, and the practical effect on a person or business. If a post appears to have crossed from criticism into a false factual attack, contact The Russell Firm to discuss an appropriate response. If you wrote a review and a company is threatening litigation, The Russell Firm can also evaluate your exposure and advise you on how to proceed in your defense.