U.K., April 12 -- Malicious bot traffic climbed to record highs in 2020, new research by leading security firm Imperva reveals. Healthcare websites, such as those providing information on COVID-19 vaccinations, were particular targets.

The 2021 Imperva Bad Bot Report is the eighth annual global in-depth analysis of bot traffic across every industry. The latest study finds that last year witnessed the highest percentage of bad bot traffic (25.6%) since the inception of the report in 2014, while traffic from humans fell by 5.7%. More than 40% of all web traffic requests originated from a bot last year, suggesting the growing scale and widespread impact of bots in daily life.

Key findings include:

Bots are targetting COVID-19 vaccine appo...