Which step was missed that would have prevented this breach?

A security expert is investigating a breach that resulted in a $32 million loss from customer accounts. Hackers were able to steal API keys and two-factor codes due to a vulnerability that was introduced in a new code a few weeks before the attack .

Which step was missed that would have prevented this breach?
A . use of the Nmap tool to identify the vulnerability when the new code was deployed
B . implementation of a firewall and intrusion detection system
C . implementation of an endpoint protection system
D . use of SecDevOps to detect the vulnerability during development

Answer: D

Explanation:

Reference: https://securityintelligence.com/how-to-prioritize-security-vulnerabilities-in-secdevops/