Today New Yorker magazine posted a long article revisiting a semi-obscure detail in the Trump-Russia-Conspiracy story. Late in the 2016 election cycle news broke that Trump Campaign servers had been communicating through an arcane channel with servers owned by Alpha Bank. Alpha Bank is closely connected to Russian President Vladimir Putin and his cronies, and has been tied to Russian Oligarch money laundering activities. This communication is regularly referenced as part of the curious connections between the Trump Campaign and Putin cronies.
A year ago this site ran a story looking into the details, and finding it inconclusive. The story is based on studies of DNS query traffic, and not of actual traffic. A DNS query is made whenever software needs the IP address for a remote computer. The source for the story seemingly had access to query logs for a set of prominent DNS servers, but because they cannot have had query logs for all DNS servers any report they made would be limited. They claimed to have seen a curious pattern of DNS queries between a set of servers owned by Alpha Bank, the Trump Organization, and Spectrum Health (a company connected to the DeVos family).
The new article covers the same territory, and claims to have studied the issue more closely.