On one level, this is not news because Hillary tweeted in 2016 about Trump tower computers contacting servers in Russia.
She never showed the details of why she believed this, but she did say that she was only using DNS addresses that are unencrypted and publicly available. In other words, "you can't see my evidence, but trust me that it supports my claim and trust me that I obtained it legally." Her people further alleged that the Russians had been hacking private databases of personal financial details of voters in swing states, and sharing some of what they found with the Trump campaign, to enable the Trump campaign to improve its micro-targetting. Specifically they said the Russians were connected to a hack of a hospital billing system in Michigan.
This got some play in the liberal media at the time, but not much, because it was far from definitive.
All of this plays into the probable cause for starting the Mueller investigation, which ended without sufficient evidence a long time ago. Which is another reason this isn't getting much play in the MSM today.
There is still no evidence that the FBI were used to "spy" on Trump. The FBI did investigate the Trump campaign, and the Clinton campaign, but they didn't share what they learned about one with the other, regardless of what Trump says.

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