SecurityX CAS-005 Reddit Questions

To reduce the number of failed patch deployments, the systems administrator should implement a robust change management process. Change management ensures that all modifications to systems or applications are planned, tested, and approved before deployment. This systematic approach reduces the risk of unplanned changes that can cause patch failures and ensures that patches are deployed in a controlled and predictable manner.

SecurityX CAS-005 endpoint security and network control objectives emphasize least privilege network access.

Creating a firewall rule to allow outbound traffic only via a proxy (A) ensures centralized inspection and control.

Configuring the proxy to allow only the required FQDNs for EDR management communication (C) limits exposure to necessary destinations.Options D and E allow broader access than necessary, and B would block required communications entirely. F relies on blocklists instead of allowlists, which is less secure for high-assurance environments.

The CIO needs to clarify the organization’s risk appetite, which defines the level of residual risk the business is willing to accept after all mitigation measures are applied. Risk appetite reflects the balance between operational requirements, security controls, and cost constraints. In business continuity planning, risk appetite helps decision-makers determine which risks must be reduced through additional investments (e.g., redundant systems, faster recovery strategies) and which risks are tolerable based on business priorities.

Mitigation (A) refers to the strategies used to reduce risk but not the threshold of acceptable residual risk. Impact (B) and Likelihood (C) are components of risk assessment—measuring severity and probability—but they do not define acceptance criteria. Risk appetite is the guiding principle that aligns technical controls with executive tolerance for disruption or loss.

By clarifying appetite, the CIO provides the compliance team and IT leadership with a framework for designing remediation activities that ensure continuity of critical internal processes while aligning with the organization’s strategic objectives and regulatory requirements.