How serious is the Capital One hack?

It is both profoundly serious and not that serious. The profoundly serious part: a lot of records, very sensitive records, were breached. Somebody got inside and got credit card applications, which means names, Social Security numbers, you don't want that combination. On the other hand, it doesn't look like she's sold them or did anything bad with them. So it's possible you're sensitive information was breached but not misused.

Did Saudi Arabia use Facebook to attack its enemies?

It used Facebook to create fake news. I'm not sure whether it was to attack its enemies or to praise its own leaders. But it's really lame that the government was setting up fake accounts on Facebook trying to make them seem like news accounts and publishing misinformation. That's garbage. I'm glad Facebook caught them.

Can AI detect kidney damage?

It seems from Google's investigations that there actually is new research showing that A.I. can anticipate when there's kidney damage. That is a very good thing. Let's see where it goes.