Caroline Is Trying to Access One of Her Company's Custom

Multiple Choice

Caroline is trying to access one of her company's custom cloud-based web applications. She sees a bright red screen advising that there is a security problem with the site and that she should not trust the contents of it. Which of the following most likely occurred that an administrator should probably check first?

A) The site's digital certificate has expired.
B) The site has been hacked.
C) The certificate authority has revoked the certificate due to suspected fraud.
D) A disgruntled employee has taken the site down.