• Slack users were shocked to discover that their messages and other data were being used to train artificial intelligence (AI) models without their knowledge or consent. This revelation has raised serious concerns about privacy and the use of personal information by technology companies.

• The article explains that Anthropic, an AI research company, had accessed and used Slack conversations as part of its training data for language models. Many Slack users felt betrayed and violated, as they had not been informed or asked for permission to have their private communications used in this way.

• The incident has sparked a broader discussion about the ethics of data collection and the responsibility of tech companies to be transparent about how they use people's personal information. Experts argue that there need to be clearer guidelines and regulations around the use of private data for AI development to protect individual privacy and build public trust.