I've just heard a brief discussion about a story of an AI developed to write Thank You cards, that then figures out the internet exists and bad stuff happens. I have not been able to find the story anywhere. Can you name it?
I think it's the example story in the long essay at Wait But Why about the dangers of AI. Search for "I wrote a little story to show you" to find the specific story, or read from part 1 for the entire argument.