WGU, Information Security and
Assurance (C725), SET II Already Passed
After determining the potential attack concepts, the next step in threat modeling is to perform
______________ analysis. ______________ analysis is
...
WGU, Information Security and
Assurance (C725), SET II Already Passed
After determining the potential attack concepts, the next step in threat modeling is to perform
______________ analysis. ______________ analysis is also known as decomposing the
application, system, or environment. The purpose of this task is to gain a greater understanding of
the logic of the product as well as its interactions with external elements.Also known as
decomposing the application ✔✔Reduction analysis
Whether an application, a system, or an entire environment, it needs to be divided into smaller
containers or compartments. Those might be subroutines, modules, or objects if you're focusing
on software, computers, or operating systems; they might be protocols if you're focusing on
systems or networks; or they might be departments, tasks, and networks if you're focusing on an
entire business infrastructure. Each identified sub-element should be evaluated in order to
understand inputs, processing, security, data management, storage, and outputs.
Trust Boundaries, Data Flow Paths, Input Points, Privileged Operations, Details about Security
Stance and Approach ✔✔The Five Key Concepts in the Decomposition process.
In the decomposition process, any location where the level of trust or security changes. ✔✔Trust
Boundaries
In the decomposition process, the movement of data between locations ✔✔Data Flow Paths
In the decomposition process, locations where external input is received ✔✔Input Points
In the decomposition process, any activity that requires greater privileges than of a standard user
account or process, typically required to make system changes or alter security ✔✔Privileged
Operations
In the decomposition process, the declaration of the security policy, security foundations, and
security assumptions ✔✔Details about Security Stance and Approach
The concept that most computers, devices, networks, and systems are not built by a single entity.
✔✔supply chain
T or F
When evaluating a third party for your security integration, you should consider the following
processes:On-Site Assessment, Document Exchange and Review, Process/Policy Review, ThirdParty Audit ✔✔True
When engaging third-party assessment and monitoring services, keep in mind that the external
entity needs to show security-mindedness in their business operations. If an external organization
is unable to manage their own internal operations on a secure basis, how can they provide reliable
security management functions for yours?
Investigate the means by which datasets and documentation are exchanged as well as the formal
processes by which they perform assessments and reviews. ✔✔Document Exchange and Review
Visit the site of the organization to interview personnel and observe their operating habits. ✔✔OnSite Assessment
Request copies of their security policies, processes/procedures, and documentation of incidents
and responses for review. ✔✔Process/Policy Review
Having an independent third-party auditor, as defined by the American Institute of Certified Public
Accountants (AICPA), can provide an unbiased review of an entity's security infrastructure, based
on Service Organization Control (SOC) (SOC) reports. Statement on Standards for Attestation
Engagements (SSAE) is a regulation that defines how service organizations report on their
compliance using the various SOC reports. The SSAE 16 version of the regulation, effective June
15, 2011, was replaced by SSAE 18 as of May 1, 2017. The SOC1 and SOC2 auditing frameworks
are worth considering for the purpose of a security assessment. The SOC1 audit focuses on a
description of security mechanisms to assess their suitability. The SOC2 audit focuses on
implemented security controls in relation to availability, security, integrity, privacy, and
confidentiality. For more on SOC audits, see AICPA.For all acquisitions, establish minimum
security requirements. These should be modeled from your existing security policy. The security
requirements for new hardware, software, or services should always meet or exceed the security
of your existing infrastructure. When working with an external service, be sure to review any
service-level agreement (SLA) to ensure that security is a prescribed component of the contracted
services. This could include customization of service-level requirements for your specific needs.
✔✔Third-Party Audi
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