It's also a second degree derivative, which is inherently noisy. A single data point isn't enough to show a trend.

> Security is stupendously hard.

It also wasn't a breach. Breach implies it was exploited. They actually found the bug and fixed it, and there was as far as they could there no signs that it was abused.

Google has some of the best security security researchers out there. Look at Project Zero, they've found the majority of the largest zero days in the past few years.