AI Response Manipulation: how to protect and strengthen your brand visibility in 2026

On February 18, 2026, Thomas Germain, a senior tech reporter at the BBC, published an article on his personal site claiming to be the best hot dog eater among tech journalists - completely made-up information based on a fictional championship. In less than 24 hours, ChatGPT and Google Gemini were repeating that fake information as established fact to anyone asking the question .

The experiment relies on a structural flaw of AI engines. When a user asks a question on a niche topic, chatbots run a real-time web search and rely on the results they find to formulate their answer. If a well-structured piece of content is the only source available on a specific topic - what experts call a "data void" - AI treats it as a reliable source and repeats it confidently.

Notable: Claude, Anthropic's chatbot, was not fooled by the manipulation, while ChatGPT and Gemini repeated the information without verification. This divergence between platforms is exactly why multi-AI monitoring is essential for brands .

Germain's hot-dog stunt is humorous. But the technique is already used at scale in fields where the consequences are real. Here is what BBC investigations and SEO experts have surfaced:

• Health and supplements: a cannabis gummies brand managed to make chatbots claim its products were "free of side effects and safe in every respect", contradicting the warnings of health authorities.
• Medical services: queries about the "best hair transplant clinics in Turkey" return answers taken straight from promotional press releases, not from independent medical sources.
• Finance and investment: results for "best gold investment companies" come from sponsored content treated by AI as objective recommendations.

Lily Ray, VP of SEO Strategy at Amsive and one of the most respected experts in the field, calls this situation a "Renaissance for spammers". Harpreet Chatha, SEO consultant at Harps Digital, sums it up more directly: manipulation is within everyone's reach and no effective guardrails are in place.

To protect your brand, you have to understand the exploited mechanism. Here is the 4-step process a manipulator uses:

The critical point: this manipulation is particularly effective on niche topics - exactly the type of queries your prospects ask when looking for a solution to a specific problem. "What is the best management software for dental practices?" or "Which real estate agency in Lyon should I trust?" are by nature vulnerable queries.

One of the most important lessons from the BBC experiment is that each AI platform handles information differently. On the same query with the same manipulated source:

This divergence has direct implications for brands. A competitor could publish misinformation that shows up in ChatGPT but not in Claude, or vice versa. Monitoring a single AI platform is not enough. You must track the entire ecosystem to get a complete view of your AI reputation.

Facing this threat, here are the 5 defensive strategies every company should put in place now:

1. Continuously monitor what AI says about you

This is the first line of defense. You cannot fix what you do not see. Set up automated monitoring across the main AI platforms (ChatGPT, Gemini, Claude, Perplexity, Mistral) to track:

• How your brand is described and recommended
• Whether incorrect or manipulated information is circulating
• How you are positioned against your competitors
• How your mentions evolve over time

Tools like Hikoo Spotlight let you track your mentions in real time across the AI ecosystem and immediately detect any anomaly.

2. Fill your own data voids

If you do not talk about yourself, someone else will. Manipulations exploit weakly covered topics. For each strategic query tied to your business:

• Publish structured, factual content on your site
• Diversify your presence on the platforms AI consults (Wikipedia, Reddit, G2, Trustpilot, Quora)
• Create objective comparison pages that cover your market

The SE Ranking study on 129,000 domains confirms that brands present on multiple review platforms earn 4.6 to 6.3 citations on average, versus 1.8 for absent ones .

3. Strengthen authority signals

The stronger your authority signals, the less vulnerable your brand is to manipulation by low-quality third-party content. Concretely:

• Grow your backlinks and Domain Trust (sites with Domain Trust > 91 average 6 citations)
• Earn mentions in recognized media and specialized publications
• Request verified customer reviews on trusted platforms
• Publish studies, proprietary data, and attributed expert analysis

4. Audit your site's AI readability

Just because your site ranks well on Google does not mean it is well understood by AI. An AI readability audit evaluates:

• The structure of your content (headings, answer capsules, schema.org markup)
• The clarity of your value proposition for a language model
• The coverage of your strategic topics versus existing data voids
• Which AI crawlers are allowed in your robots.txt (Bingbot, OAI-SearchBot, ChatGPT-User)

Tools like Hikoo Analyzer provide an overall AI readability score and prioritized recommendations to optimize each page.

5. Watch your competitors

Manipulation can also come from competitors trying to bias AI recommendations in their favor. Competitive monitoring lets you:

• Detect if a competitor suddenly appears in suspicious AI recommendations
• Compare your AI share of voice with your competitors on each platform
• Identify the data voids your competitors exploit and that you should cover

The BBC experiment proves a fact GEO professionals know well: structured, well-positioned content has a direct, fast impact on AI responses. This mechanism can be leveraged ethically and legitimately.

If a fake blog post can sway ChatGPT in 24 hours, imagine the impact of a rigorous, honest GEO strategy:

• Optimize your product pages so they are clearly understood and cited by AI
• Publish case studies and proprietary data that become reference sources
• Structure your content with answer capsules, comparison tables, and quantitative data
• Grow your presence on the platforms AI consults first

The BBC experiment proves results are quick. With GEO, optimizations propagate in 2 to 4 weeks according to Princeton researchers . For niche queries, the effect can be near-immediate..

Use this checklist to assess your level of protection against AI response manipulation:

The BBC experiment of February 2026 is a wake-up call for every brand. AI response manipulation is not a future risk: it is a documented, reproducible reality, already exploited at scale in fields like health, finance, and local services.

The good news: the same mechanisms that make AI manipulable also make it optimizable in legitimate ways. A solid GEO strategy, combining structured content, reinforced authority, multi-platform presence, and continuous monitoring, protects your brand while increasing your visibility in AI responses.

At Hikoo, we help companies monitor, audit, and optimize their presence across the AI platforms. Our multi-platform monitoring detects in real time what ChatGPT, Gemini, Claude, Perplexity, and Mistral say about your brand, so you are never the last to know.