Can't segment on Browser = None (bots)

[StefanSprangers]

Recently half of our traffic on some pages is caused by web scrapers. We recognize these visitors because they retrieve internet speeds on our website and have "None" as a browser. 

However, when I try to make a segment on this traffic (by segmenting on Browser = "None" or Browser does not exist), I get 0 results. Even when I use the default "Create segment from selection" and place the segment right below a line with "Browser = None" I still get 0 results. 

How can I make a segment for this?

[StefanSprangers · Accepted solution]

Eventually I managed to solve it by filtering on Browser Type does not exist