The website has malware harvesting payment card data, or links to malicious domains known to be linked with payment card data theft.
The website is at high risk of being hacked. The site is most likely has one or more of the following:
Missing critical framework security patches
Has known framework vulnerabilities
Security issues with website set up
Non Card Harvesting Malware
Website is exposing information that could be used by hackers for malicious purposes
Less critical framework patches missing
SSL Certificate vulnerabilities
Sharing security information like server information and programming language.
No risk detected