We were tested for >1,000 known vulnerabilities specific to our platform and services by McAfee Secure (formerly McAfee Hacker-Safe), who are ranked #1 in security industry for threat detection. This is the same auditing service used by well-known brands like Costco, Petco, and Roush Racing for their e-commerce websites.
Congratulations, you fell for the same ploy as Costco, Petco & friends - you're paying for a useless logo.
Correct me if I'm wrong, but iirc. McAfee only performs an automated remote scan - nothing you couldn't do yourself with Nessus or some other equivalent.
Get a proper audit done - a white/grey box pentest and a source audit. They didn't do that, did they?