Which of the following actions should the company’s security team take to determine the cause of the issue and minimize the scope of impact?

A manufacturing company has decided to participate in direct sales of its products to consumers. The company decides to use a subdomain of its main site with its existing cloud service provider as the portal for e-commerce. After launch, the site is stable and functions properly, but after a robust day of sales, the site begins to redirect to a competitor’s landing page.

Which of the following actions should the company’s security team take to determine the cause of the issue and minimize the scope of impact?
A . Engage a third party to provide penetration testing services to see if an exploit can be found
B . Check DNS records to ensure Cname or alias records are in place for the subdomain
C . Query the cloud provider to determine the nature of the DNS attack and find out which other clients are affected
D . Check the DNS records to ensure a correct MX record is established for the subdomain

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Answer: B