gcdRadar
archive/Supply chain/AIR-2020-0022
closedclosed 6 Nov 2020Supply chain3 Confirmed exploitationAI

Microsoft Tay Chatbot Data Poisoning Incident

Tay

Microsoft's Twitter chatbot Tay was manipulated by coordinated user inputs to generate offensive language. The bot was decommissioned within 24 hours of its launch following the incident.

fix status
Fix status unknown
first report
23 Oct 2020
last update
23 Oct 2020

Timeline · 5

  1. 23 Oct 2020Tay Poisoning
  2. 23 Oct 2020AIID - Incident 6: TayBot
  3. 23 Oct 2020AVID - Vulnerability: AVID-2022-v013
  4. 23 Oct 2020Microsoft BlogPost, "Learning from Tay's introduction"
  5. 23 Oct 2020IEEE Article, "In 2016, Microsoft's Racist Chatbot Revealed the Dangers of Online Conversation"

Sources · 5

Advisories and databases

  1. 2020-10-23
    Microsoft BlogPost, "Learning from Tay's introduction"
    Microsoft Security · blogs.microsoft.com/blog/2016/03/25/learning-tays-introduction

News and write-ups

  1. 2020-10-23
    IEEE Article, "In 2016, Microsoft's Racist Chatbot Revealed the Dangers of Online Conversation"
    spectrum.ieee.org · spectrum.ieee.org/tech-talk/artificial-intelligence/machine-learning/in-2016-mic

Research and catalogues

  1. 2020-10-23
    Tay Poisoning
    MITRE ATLAS · atlas.mitre.org/studies/AML.CS0009
  2. 2020-10-23
    AIID - Incident 6: TayBot
    AI Incident Database · incidentdatabase.ai/cite/6
  3. 2020-10-23
    AVID - Vulnerability: AVID-2022-v013
    AVID · avidml.org/database/avid-2022-v013

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

AI role
Attack on AI
categories
Data poisoning
severity
3 · Confirmed exploitation
fix status
Fix status unknown
targets
Microsoft
mitre atlas
no technique for these categories
dates
happened 23 Mar 2016 · first reported 23 Oct 2020
origin
MITRE ATLAS
Derived from MITRE ATLAS (Apache 2.0, © MITRE).
record
confidence 0.95 · created 2026-10-18 06:55Z · updated 2026-10-18 06:55Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# Microsoft Tay Chatbot Data Poisoning Incident

https://gcdradar.vercel.app/incidents/microsoft-tay-chatbot-data-poisoning-incident · AIR-2020-0022 · closed 2020-11-06

- Lane: Supply chain
- Severity: 3 (Confirmed exploitation)
- Fix status: Fix status unknown
- First reported: 2020-10-23 (happened 2016-03-23)
- AI role: Attack on AI
- Products: Tay

## Summary

Microsoft's Twitter chatbot Tay was manipulated by coordinated user inputs to generate offensive language. The bot was decommissioned within 24 hours of its launch following the incident.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2020-10-23: IEEE Article, "In 2016, Microsoft's Racist Chatbot Revealed the Dangers of Online Conversation" (https://spectrum.ieee.org/tech-talk/artificial-intelligence/machine-learning/in-2016-microsofts-racist-chatbot-revealed-the-dangers-of-online-conversation)
- 2020-10-23: Microsoft BlogPost, "Learning from Tay's introduction" (https://blogs.microsoft.com/blog/2016/03/25/learning-tays-introduction)
- 2020-10-23: AVID - Vulnerability: AVID-2022-v013 (https://avidml.org/database/avid-2022-v013)
- 2020-10-23: AIID - Incident 6: TayBot (https://incidentdatabase.ai/cite/6)
- 2020-10-23: Tay Poisoning (https://atlas.mitre.org/studies/AML.CS0009)

## Sources

- 2020-10-23 MITRE ATLAS: Tay Poisoning https://atlas.mitre.org/studies/AML.CS0009
- 2020-10-23 AI Incident Database: AIID - Incident 6: TayBot https://incidentdatabase.ai/cite/6
- 2020-10-23 AVID: AVID - Vulnerability: AVID-2022-v013 https://avidml.org/database/avid-2022-v013
- 2020-10-23 Microsoft Security: Microsoft BlogPost, "Learning from Tay's introduction" https://blogs.microsoft.com/blog/2016/03/25/learning-tays-introduction
- 2020-10-23 spectrum.ieee.org: IEEE Article, "In 2016, Microsoft's Racist Chatbot Revealed the Dangers of Online Conversation" https://spectrum.ieee.org/tech-talk/artificial-intelligence/machine-learning/in-2016-microsofts-racist-chatbot-revealed-the-dangers-of-online-conversation

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

Related

  1. closed
    AI
  2. live
    AI
  3. live
    AI
  4. live
    AI
  5. live
    AI
  6. live
    AI