The blacklist is on GitHub and is useful for other analytics software, such as GoAccess which is what I use.
* Sync your (snowplow, segment, ...) data to a data warehouse * Try to clean up your data with SQL * Keep running GA so you can compare your numbers to GA
Of course you can use the same list for every other software.
[1] https://github.com/matomo-org/referrer-spam-blacklist/blob/m...