Army Cyber Network Defender (25D) Career – Military Occupational Specialties (MOS)


The cyber network defender performs specialized computer network defense duties, including infrastructure support, incident response, auditing and managing.

The cyber network defender also protects against and detects unauthorized activity in the cyberspace domain and uses a variety of tools to analyze and respond to attacks.

Job Duties

  • Tests, implements and deploys infrastructure hardware and software
  • Responds to crisis or urgent situations within the network to mitigate immediate and potential cyber threats
  • Uses defensive measures and information collected from a variety of sources to identify, analyze, and report events that occur or might occur within the network in order to protect information, information systems, and networks from threats
  • Provides detailed analysis reports as necessary
  • Uses mitigation, preparedness, and response and recovery approaches as needed.
  • Conducts assessments of threats and vulnerabilities


In order to qualify as a cyber network defender, the successful candidate must have:

  • An SSG, MOS immaterial, with at least four years of experience in IA and IT. This experience must be verified by the personnel development officer
  • Top Secret Security Clearance
  • Contact your recruiter for additional requirements


Job training for 25D Cyber Network Defender is conducted under the auspices of the USA Signal School at Fort Gordon, GA. Contact your commanding officer for inquiries regarding waivers.

Some of the skills you’ll learn are:

  • Conducting defensive cyberspace operations
  • Conducting offensive cyberspace operations
  • Analyzing information

Helpful Skills

  • Self-discipline, confidence and intelligence
  • Physical and mental fitness to perform under pressure
  • Ability to make quick decisions
  • Capability to bear numerous responsibilities

Required ASVAB Score(s)

General Technical (GT) : 105, Skilled Technical (ST) : 105