https://www.techradar.com/news/mit-creates-psychopath-ai-using-the-dark-side-of-reddit

Ever since the internet turned Microsoft's Tay racist and genocidal, forcing Microsoft to shut down the chatbot within 24 hours, we’ve known how susceptible artificial intelligence (AI) can be to turning evil.

To study how AI can become corrupted by biased data, the Massachusetts Institute of Technology (MIT) decided to intentionally turn its AI into a psychopath named Norman—a reference to the villain in Alfred Hitchcock’s Psycho.