Cyber Incident Victim: United States Navy
Date:
Aug 2025
Location:
United States of America
Summary
During a test of unmanned vessels, a global Starlink outage cut communications, leaving dozens of autonomous boats adrift and halting operations for nearly an hour. The incident revealed vulnerabilities in the Navy’s reliance on SpaceX’s satellite network for drone operations, following earlier intermittent connection problems observed in prior tests. Officials noted that despite the benefits of low‑cost, ubiquitous connectivity, the outage exposed a single point of failure that could affect future military exercises.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 1 motive | 1 technique |
| Threat Actors | Type | Location |
|---|---|---|
| 0 actors | Available to members | Available to members |
Description
Last August, while conducting a test of unmanned surface vessels off the California coast, U.S. Navy officials realized they had encountered a single point of failure in their reliance on Starlink. A global outage across Elon Musk’s satellite network, which affected millions of Starlink users worldwide, left two dozen autonomous boats bobbing without communications and halted operations for nearly an hour. The test involved drones designed to support U.S. military options in a potential conflict with China, and the disruption was later identified as one of several Navy test interruptions linked to SpaceX’s Starlink service that prevented operators from maintaining contact with the autonomous craft. Internal Navy documents reviewed by Reuters and a source familiar with the matter confirmed that the outage exposed the vulnerability of depending on a single commercial satellite constellation for critical communications. The incident prompted Navy officials to acknowledge the risk of a single point of failure in their test architecture, though no public statement was issued by the Navy or SpaceX regarding the specific event. The Pentagon also declined to answer questions about the drone test or about SpaceX’s broader work with the Navy, leaving the details of the outage and its immediate aftermath largely undocumented in official channels.
Earlier in the year, during a series of Navy tests in California in April 2025 that included both unmanned boats and flying drones, officials reported that Starlink struggled to maintain a solid network connection because of the high data volume required to control multiple systems simultaneously. A Navy safety report on those tests noted that “Starlink reliance exposed limitations under multiple‑vehicle load” and also cited problems with radios supplied by Silvus and a network system provided by Viasat as contributing factors. In the weeks leading up to the August global outage, another set of Navy tests experienced intermittent connection issues with the Starlink network, according to additional Navy documents examined by Reuters; the exact causes of those intermittent losses were not immediately clear. Despite these recurring difficulties, the Navy continued to use Starlink for its autonomous vessel programs, citing the service’s low cost and commercial availability as factors that outweighed the observed risks in internal assessments.
In response to inquiries about the August outage and the broader pattern of Starlink‑related disruptions, the Pentagon did not provide comments, and neither the Navy nor SpaceX replied to requests for comment on the specific incidents. Pentagon Chief Information Officer Kirsten Davies stated that the Department leverages multiple, robust, resilient systems for its broad network, emphasizing a reliance on diversified communications architectures. No further official actions, such as changes to procurement policies or public after‑action reports, were detailed in the available sources, leaving the public record limited to the reported test failures and the statements made by government officials at the time.