I think that liability for bugs is exactly where she's going with this. I'm not an expert, but it sounds from a few things I've heard on some Lawfare podcasts (e.g,. [1][2]) like the idea of software liability has been discussed for quite a while now in government policy circles. This sort of public statement may be laying the groundwork for building the political will to make it happen.
[1] https://www.youtube.com/watch?v=9UneL5-Q98E&pp=ygUQbGF3ZmFyZ...
[2] https://www.youtube.com/watch?v=zyNft-IZm_A&pp=ygUQbGF3ZmFyZ...
EDIT:
> Making truly secure software products is incredibly hard in this day and age, which is one reason why demanding software product liability is so scary.
Loads of companies already are liable for bugs software that runs on their products: this includes cars, airplanes, and I would presume medical devices, and so on. The response has been what's called "safety certification": as an industry, you define a process which, if followed, you can in court say "we were reasonably careful", and then you hire an evaluator to confirm that you have followed that process.
These processes don't prevent all bugs, naturally, but they certainly go a long way towards reducing them. Liability for companies who don't follow appropriate standard processes would essentially prevent cloud companies cutting security to get an edge in time-to-market or cost.