404 Media reveals ChatGPT's targeted ads built on prompts and contact info
10/15/2026 — 10/16, 01:23·1 sources (all)·2 reports (all)
Key takeaways
- Per 404 Media, most ChatGPT users are unaware that advertisers can target them using email addresses, phone numbers, or device identifiers,…
Background & analysis
On October 15, 2026, 404 Media published a report describing how targeted advertising works inside ChatGPT. According to the outlet, most ChatGPT users are likely unaware that advertisers can target them on the platform using their email address, phone number, or unique phone identifier. The report also states that users' prompts are used for ad matching. The story frames these as previously little-publicized parts of ChatGPT's commercialization, and notes the direct implications for how users understand their privacy on the platform. At the time of publication, the account came solely from 404 Media; the report did not specify when the mechanism launched, how broadly it applies, or which advertisers are involved, and it included no response from OpenAI.
AI-generated from 1 reports · updated 18 hours ago
Latest turnAccording to 404 Media, ads inside ChatGPT are targeted using users' phone numbers and email addresses, a practice the outlet calls invasive. The same report notes that new research confirms spyware vendors are distributing malware through advertising networks.
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Reports on this story headlines open the original
According to 404 Media, ads inside ChatGPT are targeted using users' phone numbers and email addresses, a practice the outlet calls invasive. The same report notes that new research confirms spyware vendors are distributing malware through advertising networks.
404 MediaAI score 61Reporting by 404 Media reveals that most ChatGPT users don't know advertisers can target them on the platform using their email address, phone number, or unique device identifier — with prompt content also feeding into ad matching. The report sheds light on a targeted-advertising mechanism behind ChatGPT's monetization that had not been widely publicized, with direct implications for user privacy.
404 MediaAI score 70
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