Astroturfing is a marketing tactic that fakes grassroots support to shape public opinion: fake reviews, sock-puppet accounts, undisclosed paid posts and coordinated comments made to look like real customers talking. It is not new, but generative AI has made it cheaper to produce, and regulators in the US, UK and India now treat many of its forms as illegal. Here is how astroturfing works, real cases that were caught, and the legal and trust risks for brands.
Where Did the Term Come From?
The term plays on AstroTurf, a brand of synthetic grass: astroturfing is fake grassroots. It was first used about politics, where organized interests posed as spontaneous citizen movements. As social networks and review sites grew, the tactic moved into everyday marketing.
How Astroturfing Works in Marketing
Astroturfing creates the illusion that a community already backs a product. Common tactics include:
- Posting positive reviews from fake accounts, employees or paid reviewers without disclosure
- Running fan pages or "independent" review sites that the brand secretly controls
- Paying creators to post as if they found a product on their own, without labeling the post as an ad
- Buying followers, likes or views to make an account look more popular than it is
- Flooding comment sections or forums to shift sentiment, or attacking competitors anonymously
- Using generative AI to produce reviews, testimonials or "customer" videos at scale
The goal is social proof: if a trend already seems to be happening, people join in instead of questioning it.
Real Cases That Were Caught
- Samsung in Taiwan (2013): Taiwan's Fair Trade Commission fined Samsung's local subsidiary NT$10 million, about US$340,000, after it hired people to post comments online praising Samsung devices and criticizing rival HTC, as Fortune reported.
- Sunday Riley (2019): The US Federal Trade Commission (FTC) charged the skincare company and its CEO after managers, including the CEO, posted reviews of the brand's products on Sephora's website using fake accounts and asked employees to do the same. The FTC finalized an order in 2020 barring them from misrepresenting reviewers.
- Fake followers (2019): In the same announcement, the FTC settled charges against Devumi, which sold fake followers, likes and views to people and businesses who wanted to look more influential.
Is Astroturfing Legal?
Many forms are now explicitly illegal. The rules differ by market, so check with legal counsel for your situation, but the direction is clear.
United States
The FTC's rule banning fake reviews and testimonials took effect in October 2024. It prohibits fake reviews, including AI-generated ones, buying positive or negative reviews, undisclosed reviews by company insiders, company-controlled "independent" review sites, suppressing negative reviews through threats, and buying or selling fake social media indicators such as bot followers. The FTC can seek civil penalties from knowing violators.
United Kingdom
Under the Digital Markets, Competition and Consumers Act 2024, fake reviews and concealed incentivized reviews became banned practices in April 2025. The Competition and Markets Authority's fake reviews guidance also expects businesses that publish reviews to take steps to prevent and remove them.
India
India has several overlapping rules:
- The Department of Consumer Affairs and the Bureau of Indian Standards launched IS 19000:2022, a standard for collecting, moderating and publishing online consumer reviews. It applies to platforms that publish reviews and was introduced as voluntary.
- The Department of Consumer Affairs' "Endorsements Know-hows!" guide for celebrities and influencers requires paid endorsements to be clearly disclosed with terms such as "advertisement", "sponsored" or "paid promotion". Endorsements also fall under the Consumer Protection Act, 2019, which the Central Consumer Protection Authority (CCPA) enforces.
- The Advertising Standards Council of India (ASCI) requires influencers to label promotional posts with tags such as "Ad", "Sponsored" or "Collaboration" whenever there is a material connection with the brand.
Why Astroturfing Backfires
- Legal exposure: fake reviews and undisclosed endorsements can now bring penalties in major markets.
- Reputation damage: the cases above are still the first thing many people read about those brands years later.
- Platform penalties: social platforms and review sites remove fake engagement and can restrict accounts involved in manipulation.
- Trust is worth more than buzz: Edelman's 2025 special report on brand trust found that trust now ranks alongside price and quality in brand purchase decisions.
- Short-term gains: manufactured hype can win attention, but it rarely builds loyalty unless the product delivers.
Is Astroturfing Ethical?
No. Whatever the format, astroturfing works by deceiving people about who is speaking and why. Some marketers argue that a small push to start a trend does no harm, but the test is simple: would the audience feel misled if they knew who was behind the post? If yes, it is astroturfing.
What Comes Next
Generative AI makes fake reviews, avatars and testimonial videos easy to produce. Detection is improving too, and the US rule explicitly covers AI-generated reviews. AI search adds another layer: engines such as ChatGPT, Gemini, Claude, Perplexity and Google AI Overviews summarize what people say about a brand, so manipulated sentiment can spread into AI answers, and so can the story of getting caught.
What to Do Instead
- Ask real customers for reviews, and never pay for a particular rating.
- Label every paid, gifted or employee post clearly.
- Respond to negative reviews publicly and fix the underlying problem.
- Work with creators who genuinely use your product, and disclose the partnership.
- Monitor how your brand is described across the web and in AI answers, and correct factual errors at the source.
Want to see how AI engines describe your brand today? Apex® tracks brand mentions, citations and sentiment in AI answers so you can respond with facts, not fake buzz. For more on how trust is shifting in creator marketing, read our analysis of the AI impact on influencer marketing.
