- Modern AI like Claude Opus 4.7 can identify the author of a text from just 1,000 words, even with previously unpublished content.
- In real-world testing, AI correctly identified author Megan McArdle from an unpublished novel excerpt of 1,441 words.
- For science fiction texts, AI only needs 1,132 words to determine the identity.
- Notably, a eulogy only 124 words long was enough for AI to trace the author.
- AI analyzes writing styles such as tone, sentence structure, themes, and expression habits to “track” the author.
- Even ordinary sentences have a uniqueness similar to a “digital fingerprint.”
- The risk of de-anonymization increases as personal data already exists on blogs, social media, or is leaked from systems.
- This technology could threaten journalists, anonymous sources, and dissidents.
- Using AI to “obfuscate” text may lead to a loss of naturalness and expressive power.
📌 Conclusion: AI is moving closer to completely eliminating anonymity on the internet as it can identify authors from just 124–1,441 words. This poses a major risk to journalists, sources, and users requiring identity protection, especially in sensitive political environments. While it may limit negative behaviors, the broader consequence is the loss of private sharing spaces. Now that this technology exists, prevention is nearly impossible, forcing society to adapt.
