Cybersecurity Analyst - DoD & Enterprise Environments Expert
Resume:
PAUL TRUONG
Cybersecurity Analyst Network & Systems Security DoD / Enterprise Environments
Bell, CA
************@*****.***
linkedin.com/in/paul-truong-55770a119
CYBERSECURITY PROFESSIONAL SUMMARY
Cybersecurity professional with 6+ years of experience securing DoD and enterprise IT environments. Specialized in network security, endpoint hardening, Active Directory security, vulnerability remediation, and cybersecurity compliance. Proven ability to protect mission-critical systems through secure configuration, monitoring, automation, and incident response support. U.S. Army veteran with global deployment experience and advanced certifications including CompTIA CASP+ and Security+. CYBERSECURITY CORE SKILLS
Security Domains
● Cybersecurity Operations (Blue Team)
● Network Security & Hardening
● Endpoint Security & Compliance
● Identity & Access Management (IAM)
● Incident Response Support
● Risk Management & Security Controls
Technologies & Tools
● Active Directory Security & GPO
● Windows Server & Microsoft 365
● Cisco Routers, Switches, Firewalls
● DNS, DHCP, VLANs, TCP/IP
● MECM / SCCM Endpoint Compliance
● PowerShell (Auditing & Automation)
● Linux & Docker
● Security Monitoring & Logging
Frameworks & Compliance
● DoD Cybersecurity Standards
● Security Auditing & Documentation
● SOP & Policy Development
● Asset & Configuration Management
PROFESSIONAL EXPERIENCE
IT Specialist
Leidos – Bell, CA
August 2022 – Present
● Support cybersecurity operations for U.S. Marine Corps mission-critical systems, ensuring availability, integrity, and compliance.
● Enforce endpoint security baselines using MECM/SCCM, ensuring patching, configuration compliance, and vulnerability mitigation.
● Identify and remediate system misconfigurations impacting security posture.
● Support secure Windows 11 and Microsoft 365 migrations, validating access controls and post-deployment stability.
● Coordinate system imaging, updates, and weekly backup operations to ensure data integrity and continuity of operations.
● Document incidents, resolutions, and security procedures to support audits and compliance reviews. Systems & Network Administrator
United States Army (ARCENT) – El Monte, CA
February 2019 – January 2025
● Designed, secured, and maintained enterprise networks supporting 200+ users, emphasizing defense-in-depth principles.
● Hardened Cisco routers and switches by configuring VLANs, port security, firewall rules, DNS, DHCP, and TCP/IP settings.
● Administered Active Directory security, including account lifecycle management, access controls, and Group Policy Objects (GPOs).
● Conducted PowerShell-based security audits to identify unauthorized accounts, misconfigurations, and policy deviations.
● Supported cybersecurity compliance by tracking devices, users, and security configurations across ARCENT networks.
● Installed and secured VOIP systems, collaboration platforms, and endpoint devices in accordance with DoD security standards.
● Implemented satellite-based contingency communications, ensuring secure connectivity and operational resilience.
● Developed automation scripts to improve asset accountability, onboarding/offboarding security, and access management.
● Authored Standard Operating Procedures (SOPs) for secure disposal of IT equipment and data-bearing devices.
● Provided Tier 1–2 incident response support, escalating security events when required.
● Supported operations during deployments to four international locations, maintaining cybersecurity posture in austere environments.
WMS Specialist / Junior Security Administrator
PurePhoria – Alhambra, CA
2017 – 2019
● Maintained and secured LAN/WAN infrastructure, troubleshooting systems with a focus on availability and security.
● Implemented Linux and Docker-based DNS filtering, blocking malicious and unwanted traffic.
● Installed and maintained a self-hosted security monitoring system to increase visibility into network activity.
● Improved inventory and system tracking processes, reducing asset loss and configuration drift. CERTIFICATIONS
● CompTIA Advanced Security Practitioner (CASP+) – CE
● CompTIA Security+ – CE
● Microsoft 365 Certified: Fundamentals
● AWS Certified Cloud Practitioner
EDUCATION
Pasadena City College
Associate of Science – Business (60 credits completed) MILITARY SERVICE
United States Army – Honorable Discharge
Role: Systems & Network Administrator
● Supported secure IT and network operations in CONUS and OCONUS environments
● Maintained cybersecurity standards aligned with DoD requirements
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