As you may be aware, our WebScan solution currently monitors over 6 million sites and we’ve begun to put out a monthly report to interested clients, partners and 3rd parties.
A very high level summary is that there are a considerable number of Magento 1 websites that are considered HIGH RISK and out of all the platforms we monitor, Magento 1 is definitely being targeted by criminals as many of the sites are simply not being kept up to date.