More than 2,000 Magento online stores have been hacked over the weekend in what security researchers have described as the "largest campaign ever."
The attacks were a typical Magecart scheme where hackers breached sites and then planted malicious scripts inside the stores' source code, code that logged payment card details that shoppers entered inside checkout forms.
"On Friday, 10 stores got infected, then 1,058 on Saturday, 603 on Sunday and 233 today," said Willem de Groot, founder of Sanguine Security (SanSec), a Dutch cyber-security firm specialized in tracking Magecart attacks.
"This automated campaign is by far the largest one that Sansec has identified since it started monitoring in 2015," de Groot added. "The previous record was 962 hacked stores in a single day in July last year."