Strange spike in Sanity traffic

A weird thing happened yesterday, Sanity got this surge of traffic from the US:

Google is the only referrer listed but that only explains 20 visitors and is consistent with the traffic Sanity usually gets:

It's almost entirely from users on Mac and Windows devices, all desktop.

I wonder what it could be, any ideas?

My money is on bot traffic, because it looks like multiple pages were each visited once, as opposite to a single page going viral.

I've also sent out a few CVs the other day so maybe it's a company checking out my work?