Nearly half (48.5%) of traffic to websites comes from bots, not human beings, according to a recent report from Imperva Incapsula.

The report was based on data from more than 19 billion visits to 35,000 Incapsula client websites around the world with a minimum daily traffic count of at least 10 human visitors. The data was collected over a 90-day period (July 24, 2015 - October 21, 2015) and was compared with findings from previous studies conducted by Imperva.

Some 51.5% of all the Web traffic examined came from humans, 29% came from "bad bots" (those used to automate spam campaigns, spy on competitors, launch denial of service attacks, execute vulnerability scans, etc.) and 19.5% came from "good bots" (those used by search engines, marketing research tools, SEO optimizers, uptime monitors, etc.).