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Marine Corps · MOS history

0689 Cybersecurity Chief (PMOS)

MOS 0689 changed from Cybersecurity Chief to Defensive Cyberspace Chief, retaining the same code and primary MOS (PMOS) status. Remarks 2 and 7 identify a revised MOS description and changed requirements.

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Documented history

Cybersecurity Chief (PMOS)

1 October 2018 was the scheduled active-duty-component batch date for the Marine Corps Total Force System (MCTFS).

  • The record does not specify the revised duties or requirements.
  • Reserve retraining for PSMRP, Active Reserve and SMCR was required as needed for conversion, subject to available funds; service-record updates for IMA, IRR and Standby Reservists used the headquarters conversion action as authority.
  • Formal schools continued awarding current MOSs until a MARADMIN directed implementation.
Source extraction notes

Source new title: Defensive Cyberspace Chief (PMOS). Figure 4-1 remarks: 2, 7. Paragraph 4001.1b schedules the active duty component MCTFS batch for 1 October 2018. Paragraph 4001.6 separately covers Reserve retraining, subject to available funds for the specified retraining groups, and record updates for Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists. Under paragraph 4002.3, formal schools keep awarding current MOSs until a MARADMIN directs implementation. The batch date is not a documented universal individual qualification or retraining date.

Source documents (1)

Reviewed September 24, 2026 against references 1, 2, 3 and 4.

Cyber Security Technician (PMOS)

MOS 0689, Cyber Security Technician (PMOS), was converted to MOS 0688 for Marines in grades sergeant through gunnery sergeant.

The classification change is dated 1 October 2017. MARADMIN 490/17 was published on 31 August 2017.

  • The available information does not specify which service components were covered or any component-specific conditions.
Source extraction notes

The cited source prints the MOS code but not its occupational title; no title was inferred. Raw table row; grade Sgt-GySgt. Destination set is conditional where multiple codes are listed.

Source documents (2)

Reviewed September 24, 2026 against references 1, 2 and 3.

Cyber Security Technician (PMOS)

MOS 0689 was renamed from Cyber Security Technician to Cyber Security Chief, retaining the same code and primary specialty (PMOS) status. Its grade range narrowed from Sergeant through Master Gunnery Sergeant to Master Sergeant through Master Gunnery Sergeant, with revised description and requirements also indicated.

Paragraph 4001.1b schedules 1 October 2017 as the active-duty-component Marine Corps Total Force System (MCTFS) batch date. Paragraph 4002.2 instead prints 1 October 2008, a conflicting date; the 2017 date follows the FY18 edition's explicit implementation schedule.

  • The table flags description and requirement changes but does not detail them.
  • Reserve retraining for Prior Service MOS Retraining Program, Active Reserve and Selected Marine Corps Reserve Marines was required as needed and subject to available funds; entries for Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists were separately authorized by the headquarters conversion action appearing on the unit's Diary Feedback Report.
  • Formal schools were to continue awarding current MOSs until a MARADMIN directed implementation of the changes.
Source extraction notes

Source new title: Cyber Security Chief (PMOS). Figure 4-1 remarks: 2, 4, 7. NAVMC 1200.1C (FY18) paragraph 4001.1b schedules the active-duty-component MCTFS batch for 2017-10-01. Paragraph 4001.6 separately addresses Reserve retraining, subject to available funds for the specified groups, and records for Individual Mobilization Augmentees, Individual Ready Reservists and Standby Reservists. Paragraph 4002.3 keeps formal-school MOS awards unchanged until MARADMIN implementation direction. The scheduled batch date is not proof of an individual's qualification, retraining or record-update completion. Paragraph 4002.2 prints 1 October 2008, in conflict with the 1 October 2017 schedule in paragraph 4001.1b. The recorded date follows the edition-specific schedule in paragraph 4001.1b; the conflicting printed instruction is not silently corrected. The conversion table changes the classification's grade range from Sgt-MGySgt to MSgt-MGySgt. These ranges are not a direction to promote or demote individual Marines.

Source documents (1)

Reviewed September 24, 2026 against references 1, 3 and 4.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.