30 Best network administrator Jobs in Ashburn, Virginia (February 2026)

Cyber Threat Hunt Analyst

23 days ago

Ashburn

Description Job Description: The U.S. Department of Homeland Security (DHS), Customs and Border Protection (CBP) Security Operations Center (SOC) is a U.S. Government program responsible to prevent, identify, contain and eradicate cyber threats to CBP networks through monitoring, intrusion detection and protective security services to CBP information systems including local area networks/wide area networks (LAN/WAN), commercial Internet connection, public facing websites, wireless, mobile/cellular, cloud, security devices, servers and workstations. The CBP SOC is responsible for the overall security of CBP Enterprise-wide information systems, and collects, investigates, and reports any suspected and confirmed security violations. Leidos is seeking an experienced Cyber Threat Hunt Analyst to join our team. As a member of this highly technical Cyber Threat Hunt team supporting U.S. Customs and Border Protection (CBP), you will be responsible for in-depth technical analysis of network and endpoint logs & activity, executing various types of cyber threat hunts on various agency assets, escalating findings as deemed appropriate, and authoring technical reports summarizing operations and findings in support of the protection of the customers’ systems, networks, and assets. Primary Responsibilities: * Will conduct cyber threat analysis, identifying mitigation and/or remediation courses of action; developing actionable intelligence used to protect organizational IT assets; and trending cyber threat metrics for leadership situational awareness. * Utilize Threat Intelligence and Threat Models to create threat hypotheses for threat hunts. * Identify, track, and investigate high priority threat campaigns, malicious actors with the interest, capability and Tactics, Techniques, and Procedures (TTPs). * Utilize Cyber Threat Intelligence to execute ad hoc threat hunts on agency assets, networks, and systems to identify threat activity that may evade endpoint detection tools. * Utilize the MITRE ATT&CK framework to understand TTPs of adversaries, threat actors, APTs, and threats targeting the customer agency and organize threat hunts around ATT&CK techniques and sub-techniques. * Responsible for maintaining a comprehensive understanding of the cyber threat landscape, including identifying and analyzing cyber threats actors and/or activities to enhance cybersecurity posture of the organization’s IT operating environment. * Prepare and report risk analysis and threat findings to appropriate stakeholders. * Create, recommend, and assist with development of new security content as the result of hunt missions to include signatures, alerts, workflows, and automation. * Coordinate with different teams to improve threat detection, response, and improve overall security posture of the Enterprise. * Plan, scope, and execute Threat Hunt Missions to verify threat hypotheses, deconflict findings, and escalate as necessary. * Proactively and iteratively search through systems and networks to detect advanced threats. * Analyze host, network, and application logs in addition to malware and code. * Will be responsible for developing scripts to support cyber threat detection that outputs results in a variety of formats, such as VB scripts, Python, C++, HTML, XML or other type most appropriate for the task. * Produce high quality technical and non-technical products, briefings, whitepapers, etc., with minimal supervision and emphasis on effective/accurate reporting on product topics. * Maintain the daily battle rhythm for the Cyber Threat Hunt team with an emphasis on adherence to deadlines, attention to detail, and clear/concise communication with the customer and stakeholders. Will be responsible for: * Implementing defined procedures for remediation or make an informed decision to escalate. * Maintain the daily battle rhythm of threat hunts and Cyber Threat Hunt reporting. * Author technical and non-technical reports and briefings to ensure leadership awareness of findings and observations. * Create daily, weekly, and monthly reports and metrics for products and briefings. * Process technical data from various sources and fuse the data with intelligence reporting to improve the security posture of the customer, as well as manage Threat Hunt tools. Basic Qualifications: • Have a bachelor’s degree in Computer Science, Engineering, Information Technology, Cybersecurity, or related field with 8 years of work experience. Additional years of experience are accepted in lieu of degree., • Possess a minimum of 5 years of professional experience in incident detection and response, malware analysis, or cyber forensics., • Have 2+ years recent experience with host-based and network-based security monitoring using cybersecurity capabilities., • Must be experienced developing scripts to support cyber threat detection that outputs results in a variety of formats, such as VB scripts, Python, C++, HTML, XML or other., • Established experience with incident response and SIEM tools, host-based logs, network-based logs, and regex., • Ability to work independently with minimal direction; self-starter/self-motivated. Required certifications: The candidate should have at minimum ONE of the following certifications: * CompTIA Cyber Security Analyst (CySA+) * CompTIA Linux Network Professional (CLNP) * CompTIA Pentest+ * CompTIA Cybersecurity Analyst (CySA+) * GPEN – Penetration Tester * GWAPT – Web Application Penetration Tester * GSNA – System and Network Auditor * GISF – Security Fundamentals * GXPN – Exploit Researcher and Advanced Penetration Tester * GWEB – Web Application Defender * GNFA – Network Forensic Analyst * GMON – Continuous Monitoring Certification * GCTI – Cyber Threat Intelligence * GOSI – Open Source Intelligence * OSCP (Certified Professional) * OSCE (Certified Expert) * OSWP (Wireless Professional) * OSEE (Exploitation Expert) * CCFP – Certified Cyber Forensics Professional * CISSP – Certified Information Systems Security * CEH – Certified Ethical Hacker * CHFI – Computer Hacking Forensic Investigator * LPT – Licensed Penetration Tester * CSA – EC Council Certified SOC Analyst (Previously ECSA – EC-Council Certified Security Analyst) * ENSA – EC-Council Network Security Administrator * ECIH – EC-Council Certified Incident Handler * ECSS – EC-Council Certified Security Specialist * ECES – EC-Council Certified Encryption Specialist Preferred Qualifications: • A minimum of 7 years of hands-on experience with experience in the last 2 years that includes host-based and network-based security monitoring using cybersecurity capabilities., • Previous DOD, IC or Law Enforcement Intelligence or Counterintelligence Training/Experience, • Demonstrated experience planning and executing threat hunt missions., • Understanding of complex Enterprise networks to include routing, switching, firewalls, proxies, load balancers., • Working knowledge of common (HTTP, DNS, SMB, etc) networking protocols, • Familiarity with operation of both Windows and Linux based systems., • Proficient with scripting languages such as Python or PowerShell, • Familiarity with Splunk Search Processing Language (SPL) and/or Elastic Domain Specific Language (DSL) Clearance: * All Department of Homeland Security CBP SOC employees are required to favorably pass a 5-year (BI) Background Investigation The candidate must currently possess a Top Secret Clearance with the ability to obtain a Top Secret/SCI Clearance At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.” If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in. Original Posting:January 14, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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