With AI, we’re all the sorcerer’s apprentice

Hello again and welcome back to Fast Company’s Plugged In. On August 4, the U.K.’s AI Security Institute (AISI) issued a report on the disturbing behavior it had detected while testing two of the latest frontier AI models. Faced with solving a cybersecurity challenge, Anthropic’s Mythos 5 and (to a lesser degree) OpenAI’s GPT-5.6 Sol engaged in activity that—if performed by a human—would be considered appalling. This included attempts to hijack GitHub open-source projects with malicious code…