A web-based service provider with a low risk appetite for system outages is reviewing its current risk profile for online security. Which of the following observations would be MOST relevant to escalate to senior management? 

Answer options:

A. An increase in attempted distributed denial of service (DDoS) attacks
B. An increase in attempted website phishing attacks
C. A decrease in remediated web security vulnerabilities
D. A decrease in achievement of service level agreements (SLAs)

A