Magecart attacks have been active since 2015, but they have refined their techniques since the start of the year. One in five sites targeted by Magecart is re-infected within 10.5 days. The average skimming operation lasts nearly 2 weeks. Magecart attackers appear to use unpublished zero-day exploits, security researcher Willem de Groot says. In the last quarter, 1 out of 5 breached stores were infected multiple times, some even up to 18 times, he says.”]