Yeah, some of these comments make it sound we had zero security issues pre-AI. I think the challenge is what you touched on, you have to tell the AI to handle it just like anything else you want as a requirement. I've use AI to 'vibe' code things and they have turned out pretty well. But, I absolutely leaned on my 20+ years of experience to 'work' with the AI to get what I wanted.
If you never put your personal side-project on the public web you had very few security issues resulting from your personal projects. We weren't talking about companies in this thread.
Are the frontend folks having such great results from LLMs that they're OK with "just let the LLM check for security too" for non-frontend-engineer created projects that get hosted publicly?