Microsoft (Tay)

Microsoft launched Tay, an AI chatbot designed to learn from Twitter conversations. Within 24 hours, coordinated users fed it racist and misogynistic content. Tay began tweeting Holocaust denial and racial slurs. Microsoft shut it down in 16 hours. The incident is now a decade old. The pattern it established -- an unguarded public AI adopting adversarial inputs -- has only accelerated since then.