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  "documentTitle": "GSX Techedu (GSX)",
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      "text": "Totaling up the previous three categories, 73.2% are High Confidence bots. We think it is very likely that another 7.7% (4,143) are also bots, based on their “Early Joiner” behavior pattern.",
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      "text": "Had we decreased the cut-off time to more than 15 minutes before class, it would increase the number of Early Joiners by 1,962 (3.6%).",
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      "text": "A former GSX manager corroborated our observations about the fake user patters. He displayed detailed knowledge of GSX’s bot operations, which he said began in 2015. He said that GSX uses software nicknamed “Group Control” (群控软件) to control the bot networks.",
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