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Army MOS · IT & Cyber

255S Cyberspace Defense Warrant Officer

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

A Cyberspace Defense Warrant Officer provides expertise on the proper employment, support, and defense of information networks, systems, and services. Their expertise covers strategic and tactical information capabilities used in operations supporting the Army's portion of the cyberspace domain.

Minimum clearance: TS/SCI

Core Skills

  • Strategic and tactical network support

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Information Security Analysts

Experience supporting and defending Army information networks, systems, and services transfers to civilian information security work.

How to prepare: Build a lab demonstration of firewall controls and document tests showing how they protect data transmissions.

What the civilian work involves
  • Develop plans to safeguard computer files against accidental or unauthorized modification, destruction, or disclosure and to meet emergency data processing needs.
  • Encrypt data transmissions and erect firewalls to conceal confidential information as it is being transmitted and to keep out tainted digital transfers.
  • Perform risk assessments and execute tests of data processing system to ensure functioning of data processing activities and security measures.
Civilian tools and software (examples)
  • Linux
  • Microsoft PowerShell

Network and Computer Systems Administrators

Supporting the employment of strategic and tactical information networks and systems provides a foundation for civilian network and systems administration.

How to prepare: Build a small Linux network lab and document its configuration, backup procedure, and recovery test.

What the civilian work involves
  • Maintain and administer computer networks and related computing environments, including computer hardware, systems software, applications software, and all configurations.
  • Perform data backups and disaster recovery operations.
  • Diagnose, troubleshoot, and resolve hardware, software, or other network and system problems, and replace defective components when necessary.
Civilian tools and software (examples)
  • Linux
  • Bash
  • Microsoft Active Directory

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Getting Started

  • CompTIA Security+ · Funded · STAR

    Validate core IT security skills for the information security analyst path.

    For: Information Security Analysts

  • Cisco Certified Network Associate (CCNA)

    Develop and validate network fundamentals, IP connectivity, IP services, and security fundamentals through preparation for the 200-301 CCNA exam.

    Eligibility and preparation: No certification exam prerequisites.

    For: Network and Computer Systems Administrators

Notes & Sources

Evidence for this guidance (6 documents)
  1. Army COOL MOC feed: 255S Cyberspace Defense Warrant Officer

    [1] data/authority/army-codes.json entry 255S (OSD COOL feed, fetched 2026-07-25); DB rank warrant_officer, authority codeType warrant_officer

    Supports: Strategic and tactical network support, Information Security Analysts (O*NET 15-1212.00), Network and Computer Systems Administrators (O*NET 15-1244.00)

  2. O*NET: Information Security Analysts

    [2] O*NET 30.3 occupational data

    Supports: Information Security Analysts (O*NET 15-1212.00)

  3. O*NET: Network and Computer Systems Administrators

    [3] O*NET 30.3 occupational data

    Supports: Network and Computer Systems Administrators (O*NET 15-1244.00)

  4. COOL credential mapping: CompTIA Security+

    [4] 255S cached COOL credential feed

    Supports: CompTIA Security+

  5. CompTIA Security+ exam details

    [5] Exam details, recommended experience

    Supports: CompTIA Security+

  6. COOL credential mapping: Cisco Certified Network Associate (CCNA)

    [6] 255S cached COOL credential feed

    Supports: Cisco Certified Network Associate (CCNA)

    [7]Cisco: CCNA certification · How to earn your CCNA, Core exam 200-301 CCNA; updated 31 August 2026, retrieved 23 September 2026

    Supports: Cisco Certified Network Associate (CCNA)

Defense contractor jobs for 255S

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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