Hi!
Sorry if this has already been reported, but we noticed a biggggg increase on the pageviews of one of the Dutch Wikipedia articles, which almost seems impossible.
Pageviews of https://nl.wikipedia.org/wiki/Johannes_Kepler went from 52 on Friday 27/03, to 24.2302 on 28/3, to 586.538 on Sunday 29/03.
(source: https://nl.wikipedia.org/wiki/Gebruiker:Edoderoo/nl-stats-gisteren/20200329, which gets it's data from stats.wikimedia.org)
What happened??
Indeed, that is what https://tools.wmflabs.org/pageviews/?project=nl.wikipedia.org&platform=all-access&agent=user&redirects=0&range=latest-20&pages=Johannes_Kepler says.
No idea if this is in scope for Product-Analytics.
Compare desktop vs mobile web. This is surely just an undeclared bot scraping the page, which is unfortunately common. Analytics is working to improve bot detection, until then there's not much you can do but try to manually verify the legitimacy of the anomalies like this. For most wikis comparing mobile/desktop is enough to ascertain it is fake traffic.