In a study conducted in 2019 evaluating the state of ad fraud worldwide, it was found that the average global ad traffic that was deemed invalid accounted for **** percent of total digital ad traffic that year. More than ** percent of ad traffic in China was invalid, while the second largest region based on bot traffic share was North America, at 3.3. percent.
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Campaign Asia. (September 10, 2019). Average share of global ad traffic that was invalid in 2019, by region [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 23, 2026, from /statistics/1117195/invalid-digital-ad-traffic-share-region/
Campaign Asia. "Average share of global ad traffic that was invalid in 2019, by region ." Chart. September 10, 2019. ÌÇÐÄÆƽâ°æ. Accessed July 23, 2026. /statistics/1117195/invalid-digital-ad-traffic-share-region/
Campaign Asia. (2019). Average share of global ad traffic that was invalid in 2019, by region . ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 23, 2026. /statistics/1117195/invalid-digital-ad-traffic-share-region/
Campaign Asia. "Average Share of Global Ad Traffic That Was Invalid in 2019, by Region ." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 10 Sep 2019, /statistics/1117195/invalid-digital-ad-traffic-share-region/
Campaign Asia, Average share of global ad traffic that was invalid in 2019, by region ÌÇÐÄÆƽâ°æ, /statistics/1117195/invalid-digital-ad-traffic-share-region/ (last visited July 23, 2026)
Average share of global ad traffic that was invalid in 2019, by region [Graph], Campaign Asia, September 10, 2019. [Online]. Available: /statistics/1117195/invalid-digital-ad-traffic-share-region/
