A company launched an e-commerce website with multiple points of sale through internal and external e- stores. Customers access the stores from the public website, and employees access the stores from the intranet with an SSO. Which action is needed to comply with PCI standards for hardening the systems?

Refer to the exhibit.

Two types of clients are accessing the front ends and the core database that manages transactions, access control, and atomicity. What is the threat model for the SQL database?

A security incident affected an organization's critical business services, and the customer-side web API became unresponsive and crashed. An investigation revealed a spike of API call requests and a high number of inactive sessions during the incident. Which two recommendations should the engineers make to prevent similar incidents in the future? (Choose two.)

A new malware variant is discovered hidden in pirated software that is distributed on the Internet. Executives have asked for an organizational risk assessment. The security officer is given a list of all assets. According to NIST, which two elements are missing to calculate the risk assessment? (Choose two.)

A payroll administrator noticed unexpected changes within a piece of software and reported the incident to the incident response team. Which actions should be taken at this step in the incident response workflow?