Others have pointed out that we thought we would get security vulnerability from AI code, but it turns out AI is uncovering vulnerabilities in decades of human code.
https://www.crowdstrike.com/en-us/blog/crowdstrike-researche...
If so, I fear you're making the opposite point, which is that AI made genuinely new discoveries that were not in its training set, about codebases that were in its training set. It quite literally expanded the horizon of what we know.