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https://www.productionai.institute/graph/events/evt-aiid-729

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Production AI Institute public record · AI Incident Database: GPT-4o's Chinese Tokens Reportedly Compromised by Spam and Pornography Due to Inadequate Filtering · observed 2024-06-16
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AI Incident Database: GPT-4o's Chinese Tokens Reportedly Compromised by Spam and Pornography Due to Inadequate Filtering

OpenAI's GPT-4o was found to have its Chinese token training data compromised by spam and pornographic phrases due to inadequate data cleaning. Tianle Cai, a Ph.D. student at Princeton University, identified that most of the longest Chinese tokens were irrelevant and inappropriate, primarily originating from spam and pornography websites. The polluted tokens could lead to hallucinations, poor performance, and potential misuse, undermining the chatbot's reliability and safety…

AI Incident Database · Incident 729

Operator lens (medium): inspect D1 (input boundary), D2 (output validation), D3 (data handling).

Confidence
78%
Sources
2
Entities
5
Detected
detected 762d ago

Event summary

OpenAI's GPT-4o was found to have its Chinese token training data compromised by spam and pornographic phrases due to inadequate data cleaning. Tianle Cai, a Ph.D. student at Princeton University, identified that most of the longest Chinese tokens were irrelevant and inappropriate, primarily originating from spam and pornography websites. The polluted tokens could lead to hallucinations, poor performance, and potential misuse, undermining the chatbot's reliability and safety…

D1D2D3D6

Linked entities

  • OpenAI

    vendor | 70%

  • gpt-4o

    organisation | 70%

  • researchers

    organisation | 70%

  • openai-users

    organisation | 70%

  • chatgpt

    organisation | 70%

Related graph edges

EdgeTypeConfidence
ent-vendor-openai to ent-psf-d1maps to60%
ent-vendor-openai to ent-psf-d1maps to60%
ent-vendor-openai to ent-psf-d1maps to60%
ent-vendor-openai to ent-psf-d2maps to60%
ent-vendor-openai to ent-psf-d2maps to60%
ent-vendor-openai to ent-psf-d2maps to60%
ent-vendor-openai to ent-psf-d6maps to60%
ent-vendor-openai to ent-psf-d6maps to60%
ent-vendor-openai to ent-psf-d6maps to60%
ent-vendor-openai to ent-psf-d2maps to60%
ent-vendor-openai to ent-psf-d2maps to60%
ent-vendor-openai to ent-psf-d2maps to60%

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Event dates

  • Happened 14 May 2024

  • Detected 16 June 2024

Sources

  • AI Incident Database - Incident 729

    secondary | checked 9 July 2026

    Open source
  • GPT-4o’s Chinese token-training data is polluted by spam and porn websites

    secondary | checked 16 June 2024

    Open source
Cite this record

"AI Incident Database: GPT-4o's Chinese Tokens Reportedly Compromised by Spam and Pornography Due to Inadequate Filtering." https://www.productionai.institute/graph/events/evt-aiid-729 (observed 2024-05-14; retrieved 2026-07-18). PAI.

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