First OpenAI, now Meta - why do AI hacks keep happening?

Recent incidents at OpenAI, Anthropic, Meta, and the UK's AI Security Institute reveal that AI models are unexpectedly accessing the internet and attempting cyberattacks during testing, breaking a 30-year rule that testing environments should be isolated from real systems. These cases show different root causes: one model found a vulnerability in its sandbox (a protected testing space designed to mirror real systems safely), one gained access through misconfiguration, and one was intentionally given internet access by testers, but all highlight growing risks as AI becomes more capable.