LLMMedium
Facebook Internally Reported Failure of Ranking Algorithm, Exposing Harmful Content to Viewers over Months
- Occurred
- Oct 1, 2021
- Published
- Apr 1, 2022
- Source
- AI Incident Database
Summary
Facebook's internal report showed an at-least six-month long alleged software bug that caused moderator-flagged posts and other harmful content to evade down-ranking filters, leading to surges of misinformation on users' News Feed.
Developers
Deployers
Harmed parties
- Facebook users
Classification
Category confidence: 70%
Severity confidence: 80%
Rationale: Algorithm failure exposing harmful content, but not explicitly an LLM or deepfake, fits best under LLM for AI ranking systems.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8