Back in 2014 if a network scrubbed your data, you called them out and they fixed it. Now they just delete the evidence.
I noticed my conversion rate on AdWork Media dropped by 40% overnight. Same traffic, same offer, same landing page. Asked support for a breakdown of the traffic data, and they said the logs were 'corrupted' and no longer available.
The dashboard still shows the data, but when I asked for the raw logs to investigate, suddenly they don't exist. This is the kind of thing that would have gotten a network blacklisted in the old days.