What must be done in order to prevent this from happening in the future?

After a recent breach, an organization determined that phishing was used to gain initial access to the network before regaining persistence. The information gained from the phishing attack was a result of users visiting known malicious websites. What must be done in order to prevent this from happening in the future?
A. Modify web proxy settings.
B. Modify outbound malware scanning policies.
C. Modify identification profiles.
D. Modify an access policy.

350-701: Implementing and Operating Cisco Security Core Technologies Free dumps for 350-701 in PDF format. High quality 350-701 PDF and software. VALID exam to help you pass.