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Security Control Assessor

Gray Tier Technologies

This is a Full-time position in Springfield, VA posted November 23, 2021.


Conducts independent comprehensive assessments of the management, operational, and technical security controls and control enhancements employed within or inherited by an information technology (IT) system to determine the overall effectiveness of the controls (as defined in NIST 800
– 37)


Manage and approve Accreditation Packages (e.g., ISO/IEC 15026
– 2).

Plan and conduct security authorization reviews and assurance case development for initial installation of systems and networks.

Review authorization and assurance documents to confirm that the level of risk is within acceptable limits for each software application, system, and network.

Verify that application software/network/system security postures are implemented as stated, document deviations, and recommend required actions to correct those deviations.

Develop security compliance processes and/or audits for external services (e.g., cloud service providers, data centers).

Establish acceptable limits for the software application, network, or system.

Manage Accreditation Packages (e.g., ISO/IEC 15026-2).

Perform security reviews, identify gaps in security architecture, and develop a security risk management plan.

Perform security reviews and identify security gaps in security architecture resulting in recommendations for inclusion in the risk mitigation strategy.

Perform risk analysis (e.g., threat, vulnerability, and probability of occurrence) whenever an application or system undergoes a major change.

Provide input to the Risk Management Framework process activities and related documentation (e.g., system life-cycle support plans, concept of operations, operational procedures, and maintenance training materials).

Verify and update security documentation reflecting the application/system security design features.

Participate in Risk Governance process to provide security risks, mitigations, and input on other technical risk.

Ensure that plans of actions and milestones or remediation plans are in place for vulnerabilities identified during risk assessments, audits, inspections, etc.

Assure successful implementation and functionality of security requirements and appropriate information technology (IT) policies and procedures that are consistent with the organization’s mission and goals.

Define and document how the implementation of a new system or new interfaces between systems impacts the security posture of the current environment.

Ensure that security design and cybersecurity development activities are properly documented (providing a functional description of security implementation) and updated as necessary.

Support necessary compliance activities (e.g., ensure that system security configuration guidelines are followed, compliance monitoring occurs).

Ensure that all acquisitions, procurements, and outsourcing efforts address information security requirements consistent with organization goals.

Assess the effectiveness of security controls.

Assess all the configuration management (change configuration/release management) processes.


Knowledge of computer networking concepts and protocols, and network security methodologies.

Knowledge of risk management processes (e.g., methods for assessing and mitigating risk).

Knowledge of laws, regulations, policies, and ethics as they relate to cybersecurity and privacy.

Knowledge of cybersecurity and privacy principles.

Knowledge of cyber threats and vulnerabilities.

Knowledge of specific operational impacts of cybersecurity lapses.

Knowledge of authentication, authorization, and access control methods.

Knowledge of applicable business processes and operations of customer organizations.

Knowledge of application vulnerabilities.

Knowledge of communication methods, principles, and concepts that support the network infrastructure.

Knowledge of capabilities and applications of network equipment including routers, switches, bridges, servers, transmission media, and related hardware.

Knowledge of cyber defense and vulnerability assessment tools and their capabilities.

Knowledge of encryption algorithms

Knowledge of cryptography and cryptographic key management concepts

Knowledge of data backup and recovery.

Knowledge of database systems.

Knowledge of business continuity and disaster recovery continuity of operations plans.

Knowledge of organization’s enterprise information security architecture.

Knowledge of organization’s evaluation and validation requirements.

Knowledge of organization’s Local and Wide Area Network connections.

Knowledge of Security Assessment and Authorization process.

Knowledge of cybersecurity and privacy principles used to manage risks related to the use, processing, storage, and transmission of information or data.

Knowledge of vulnerability information dissemination sources (e.g., alerts, advisories, errata, and bulletins).

Knowledge of cybersecurity and privacy principles and organizational requirements (relevant to confidentiality, integrity, availability, authentication, non-repudiation).

Knowledge of Risk Management Framework (RMF) requirements.

Knowledge of information technology (IT) security principles and methods (e.g., firewalls, demilitarized zones, encryption).

Knowledge of current industry methods for evaluating, implementing, and disseminating information technology (IT) security assessment, monitoring, detection, and remediation tools and procedures utilizing standards-based concepts and capabilities.

Knowledge of network access, identity, and access management (e.g., public key infrastructure, Oauth, OpenID, SAML, SPML).

Knowledge of new and emerging information technology (IT) and cybersecurity technologies.

Knowledge of system and application security threats and vulnerabilities (e.g., buffer overflow, mobile code, cross-site scripting, Procedural Language/Structured Query Language (PL/SQL) and injections race conditions, covert channel, replay, return-oriented attacks, malicious code).

Knowledge of structured analysis principles and methods.

Knowledge of systems diagnostic tools and fault identification techniques.

Knowledge of the cyber defense Service Provider reporting structure and processes within one’s own organization.

Knowledge of the enterprise information technology (IT) architecture.

Knowledge of the organization’s enterprise information technology (IT) goals and objectives.

Knowledge of Supply Chain Risk Management Practices (NIST SP 800-161)

Knowledge of the organization’s core business/mission processes.

Knowledge of applicable laws, statutes (e.g., in Titles 10, 18, 32, 50 in U.S.

Code), Presidential Directives, executive branch guidelines, and/or administrative/criminal legal guidelines and procedures.

Knowledge of information technology (IT) supply chain security and supply chain risk management policies, requirements, and procedures.

Knowledge of critical infrastructure systems with information communication technology that were designed without system security considerations.

Knowledge of network security architecture concepts including topology, protocols, components, and principles (e.g., application of defense-in-depth).

Knowledge of security architecture concepts and enterprise architecture reference models (e.g., Zachman, Federal Enterprise Architecture (FEA)).

Knowledge of security models (e.g., Bell-LaPadula model, Biba integrity model, Clark-Wilson integrity model).

Knowledge of Personally Identifiable Information (PII) data security standards.

Knowledge of Payment Card Industry (PCI) data security standards.

Knowledge of Personal Health Information (PHI) data security standards.

Knowledge of laws, policies, procedures, or governance relevant to cybersecurity for critical infrastructures.

Knowledge of an organization’s information classification program and procedures for information compromise.

Knowledge of embedded systems.

Knowledge of penetration testing principles, tools, and techniques.

Knowledge of controls related to the use, processing, storage, and transmission of data.

Knowledge of Application Security Risks (e.g.

Open Web Application Security Project Top 10 list)


Ability to identify systemic security issues based on the analysis of vulnerability and configuration data.

Ability to answer questions in a clear and concise manner.

Ability to ask clarifying questions.

Ability to communicate complex information, concepts, or ideas in a confident and well-organized manner through verbal, written, and/or visual means.

Ability to communicate effectively when writing.

Ability to conduct vulnerability scans and recognize vulnerabilities in security systems.

Ability to facilitate small group discussions.

Ability to prepare and present briefings.

Ability to produce technical documentation.

Ability to design valid and reliable assessments.

Ability to analyze test data.

Ability to collect, verify, and validate test data.

Ability to dissect a problem and examine the interrelationships between data that may appear unrelated.

Ability to identify basic common coding flaws at a high level.

Ability to translate data and test results into evaluative conclusions.

Ability to ensure security practices are followed throughout the acquisition process.

Ability to apply collaborative skills and strategies.

Ability to apply critical reading/thinking skills.

Ability to effectively collaborate via virtual teams.

Ability to ev