Study: LLMs Able to De-Anonymize User Accounts on Reddit, Hacker News
12 hours ago
- #LLMs
- #deanonymization
- #privacy
- LLMs can de-anonymize pseudonymous user accounts on platforms like Reddit and Hacker News.
- Researchers used LLMs to connect pseudonymous accounts with real-life profiles (e.g., LinkedIn) with 99% precision.
- The deanonymization process involves extracting identity-relevant features, semantic search, and reasoning over candidates.
- AI companies may struggle to prevent misuse of LLMs for deanonymization due to common, non-malicious tasks involved.
- Pseudonyms are vital for privacy, especially for individuals escaping abusive situations or needing anonymity.
- Online identities are vulnerable if users share specific, combinable details (e.g., location, hobbies, job).
- Advice for protecting privacy includes using new accounts for sensitive info and limiting identifiable details.