Was There a Connection Between a Russian Bank and the Trump Campaign?

I know the title sounds like a political piece, but it's not. The subheading is "A team of computer scientists sifted through records of unusual Web traffic in search of answers. A set of cryptic data has inspired a years-long argument over its meaning."

This article is fascinating, specifically for the assertion that a group of computer scientists including "Max" have a global view of all DNS queries. How does that work?