The Naval Operations Security Support Team

The NOST’s mission is to provide OPSEC support to the Department of the Navy in order to improve the warfighting effectiveness of the fleet forces. As the OPSEC element for the DoN, the NOST guides, assists, and assesses OPSEC programs throughout the Navy and Marine Corps, and develops OPSEC doctrine, training, and awareness for the DoN. The NOST improves the OPSEC posture of our U.S. Naval Forces by educating and training our Sailors, Marines, civilians, and family members.

Operations Security (OPSEC) is a systematic method used to identify, control, and protect critical information and subsequently analyze friendly actions associated with military operations and other activities. Ultimately, OPSEC is protecting your information and activities from your adversaries.

Boatswain's Mate 1st Class Soualiho Fofana, assigned to Commander, Task Group (CTG) 56.1, uses a satellite phone for communications during a U.S.-U.K. Mine Countermeasures Exercise (MCMEX). U.S.-U.K. MCMEX is designed to improve interoperability and evolve the expeditionary mine countermeasures company concept of employment from an afloat forward staging base and afloat platforms of opportunity.  U.S. Navy Combat Camera photo by Mass Communication Specialist 3rd Class Jonah Stepanik (Released)  151117-N-JC374-138
Aviation Electronics Technician 1st Class Michael McElravy, from the Battle Cats of Helicopter Maritime Strike Squadron (HSM) 73, performs maintenance on the mission computer display of an MH-60R Sea Hawk helicopter in the hangar bay of the aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson is deployed to the area supporting maritime security operations, strike operations in Iraq and Syria as directed, and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility.   U.S. Navy photo by Mass Communication Specialist 2nd Class John Philip Wagner, Jr. (Released)  150228-N-TP834-355
The littoral combat ship USS Freedom (LCS 1) transits alongside the aircraft carrier USS John C. Stennis (CVN 74). U.S. Navy ships are underway conducting an independent deployer certification exercise in the Southern California operating area. The exercise provides a multi-ship environment to train and certify independent deployers in surface warfare, air defense, maritime interception operations, command and control/information warfare, command, control, computers and combat systems intelligence and mine warfare.  U.S. Navy photo by Mass Communication Specialist Seaman Christopher Frost (Released)  150427-N-IK337-212
Information Systems Technician 1st Class Heather Edbauer and Information Systems Technician 2nd Class Marissa Toepfer, both assigned to Pre-commissioning Unit Gerald R. Ford (CVN 78), track inventory while issuing new network computers for shipboard offices. Ford Sailors are outfitting the ship in preparation for a scheduled crew move aboard later this summer.  U.S. Navy photo by Mass Communication Specialist 1st Class Joshua J. Wahl (Released)  150714-N-KK576-024

The OPSEC Process

Information about friendly (U.S., allied, and/or coalition) activities, intentions, capabilities, or limitations an adversary seeks in order to gain a military, political, diplomatic, economic, or technological advantage. Simply put, any information that the “bad guy” wants and needs to do us harm or allows them to gain an advantage over us.

A person, or group of people, whose objective differs with the friendly objective.

A weakness that the adversary can exploit.

A measure of the potential degree to which protected information is subject to loss through adversary exploitation. Basically, this is the likelihood your information will be collected and acted on.

Anything that effectively negates or mitigates an adversary’s ability to exploit vulnerabilities.

OPSEC in the News

First in Class Ship, Future USNS John Lewis (T-AO 205) Starts Construction

A ceremony was hosted at General Dynamics-National Steel and Shipbuilding Company (GD-NASSCO) shipyard to celebrate the start of construction of the Navy's first John Lewis-class fleet replenishment oiler, the future USNS John Lewis (T-AO 205), Sept. 20.Read More...

Submarine Squadron 15 Supports Sister Village in Typhoon Mangkhut Recovery

Sailors assigned to Commander, Submarine Squadron (COMSUBRON) 15 and Performance Monitoring Team detachment (PMT det) Guam volunteered to assist with typhoon recovery in the command's sister village of Inarajan, Sept. 17-19.Read More...

NETC Conducts Leadership Offsite

NETC domain leaders gathered for a meeting to discuss the "street to fleet" process of transforming civilians into warfighters Sept. 18-19.Read More...

  • Never bypass an opportunity to keep your mouth shut.

    MG Paul Menoher, Jr.
  • Intelligence is the exploitation of the other sides' OPSEC failures.

  • Samson slew 10,000 Philistines with the jawbone of an ass.
    OPSEC is jeopardized with the same weapon.

  • Great advantage is drawn from knowledge of your adversary,
    and when you know the measure of his intelligence and character,
    you can use it to play on his weaknesses.

    Frederick the Great
  • You can see a lot of things just by looking.

    Casey Stengle
  • The biggest obstacle of modern day OPSEC
    is the archaic mentality of the grandfathers of intelligence.

    SSG Robert Thomas
  • Things which matter most must never
    be at the mercy of things which matter least,

  • If common sense was common, everyone would have it.

  • Intelligence is the confirmation of information.

  • Thinking is the hardest work there is,
    which is probably the reason so few engage in it.

    Henry Ford

  • Dictionary

    All OPSEC terms & definitions can be found here

    Uncle Sam's OPSEC

    An OPSEC computer-based training course now available in Apple iTunes and Google Play APP stores; search Naval OPSEC

    Program Manager

    Assessment Procedures and Templates



    Briefs on OPSEC topics


    Frequently Asked Questions


    OPSEC policies and guidance for the DoD and DoN


    Where you can find links to other OPSEC Activities


    Click on the videos below to learn more about OPSEC and how it affects you, your family, and everyone you work with

    OPSEC Course

    The Navy 2-Day OPSEC Course is directed at OPSEC program managers and certifies them to conduct their duties. Courses are hosted in various locations on the East Coast and the West Coast and occasionally in the far-East and Europe. To register for a course or for more information email

    East Coast

    West Coast

    Meet the OPSEC Team

    Jim Magdalenski Director
    Scott Carey Team Member
    Nicole NunnTeam Member

    OPSEC by the numbers

    Attempted malicious computer infections

    180 per second

    Phishing Emails Sent

    1,700 per second

    Identities stolen

    0.5 per second

    New Malwares created

    10 per second