Investigation of a Twitter user's followers shows that Twitter is relatively good at detecting fake/bot accounts but only removes a fraction of them (Geoff Golberg)

Geoff Golberg:
Investigation of a Twitter user's followers shows that Twitter is relatively good at detecting fake/bot accounts but only removes a fraction of them  —  Someone bought my Twitter account 10K fake/bot followers, and here's what I learned about Twitter's spam detection tools  —  Story First, Data Second

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