Global e-commerce retail sales rose 209% during the month of April, as consumers moved in-store activity to online and mobile channels due to the COVID-19 pandemic, according to an ACI Worldwide study.

The electronic payments processor said average transaction volume grew 23.5% in April, compared with the year-ago period. In March, when most U.S. states first issued stay-at-home orders, average transaction volumes were up 5.3% from a year ago, according to a press release.

"Trends in e-commerce purchasing behaviors that we began to see in March have continued in April, as hundreds of millions of consumers around the world adapt to the restrictions put in place to inhibit the spread of the coronavirus," Debbie Guerra, executive vice president, ACI Worldwide, said in the release. 

She added fraud is also up from year ago figures, as the percentage of fraud attacks reached 4.3% in April, compared with 3.8% a year ago. The April figure is down slightly from 5.3% in March.