• Home
  • News
  • Fortune 500
  • Tech
  • Finance
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
U.S. military

Chinese Hackers Steal Sensitive Data on U.S. Subs and Missiles from Military Contractor, Report Says

By
David Z. Morris
David Z. Morris
Down Arrow Button Icon
By
David Z. Morris
David Z. Morris
Down Arrow Button Icon
June 10, 2018, 1:31 PM ET
Guided Missile Submarine Shown To Media
AT SEA - JANUARY 29: In this handout provided by the U.S. Navy, the guided missile submarine USS Ohio (SSGN 726) stops for a personnel boat transfer January 29, 2006 off the coast of Puget Sound, Washington. Media were transported to Ohio to see the new capabilities that the submarine now brings to the joint warfighter. Ohio is the first ballistic missile submarine to complete conversion to the new class of guided missile submarines (SSGN). Three other submarines are undergoing the SSGN conversion process including USS Michigan (SSGN 727), Florida (SSGN 727) and Georgia (SSGN 729). (Photo by Dave Fliesen/U.S. Navy via Getty Images)Dave Fliesen/U.S. Navy via Getty Images

Chinese government hackers have compromised an unnamed contractor for the Naval Undersea Warfare Center, a submarine research branch of the military, according to a new report. Six hundred fourteen gigabytes of data were stolen, including submarine communications data and information on a secretive project known as Sea Dragon. The attack has been attributed to China’s Ministry of State Security, or MSS.

The Washington Post, citing anonymous American officials, reports thatthe data was stored on the contractor’s unclassified network, though officials said the material could be considered classified and was highly sensitive. The compromised data could give China important edges in both technology and tactics at sea, including in its conflict with a half-dozen nations including Japan and Indonesia over territorial claims in the South China Sea.

Little is known about the classified Sea Dragon initiative, but it is an underwater technology that the Defense Department has described as introducing a “disruptive offensive capability,” according to the Post, and which some defense experts regard as a key component in America’s precautions for conflict with China. Submarine weapons are key for China’s military ambitions, but Chinese cyber-incursions in recent years have nabbed designs and data for everything from advanced fighter jets to missile systems.

Get Data Sheet, Fortune’s technology newsletter.

In addition to headline technologies, the hack of defense databases could give China insight into U.S. capabilities, such as sensor distance; and into how much the U.S. knows about Chinese weapons. Retired admiral James Stavridis told the Post that the spread of such data “deeply reduces our level of comfort if we were in a close undersea combat situation with China.”

As serious as it is, the loss of weapons and intelligence data may not be the worst part of the hack. Former Navy officer and NSA analyst John Schindler, writing for the Observer, highlights the loss of cryptographic information used in submarine communications. Those techniques allow coordination of forces at sea, and their compromise can lend an enemy a huge tactical advantage in any conflict. As a precedent, Schindler cites the Allied compromise of the German Enigma cipher, and the resulting demolition of Nazi U-Boats that hastened the end of World War II—though it’s important to note that the Germans didn’t know the code had been cracked, and the U.S. may be able to react to the recent hack by changing codes and practices to keep messages out of Chinese hands.

About the Author
By David Z. Morris
See full bioRight Arrow Button Icon
0

Most Popular

placeholder alt text
Economy
Ford workers told their CEO 'none of the young people want to work here.' So Jim Farley took a page out of the founder's playbook
By Sasha RogelbergNovember 28, 2025
4 days ago
placeholder alt text
Success
Warren Buffett used to give his family $10,000 each at Christmas—but when he saw how fast they were spending it, he started buying them shares instead
By Eleanor PringleDecember 2, 2025
19 hours ago
placeholder alt text
Economy
Elon Musk says he warned Trump against tariffs, which U.S. manufacturers blame for a turn to more offshoring and diminishing American factory jobs
By Sasha RogelbergDecember 2, 2025
13 hours ago
placeholder alt text
C-Suite
MacKenzie Scott's $19 billion donations have turned philanthropy on its head—why her style of giving actually works
By Sydney LakeDecember 2, 2025
20 hours ago
placeholder alt text
North America
Jeff Bezos and Lauren Sánchez Bezos commit $102.5 million to organizations combating homelessness across the U.S.: ‘This is just the beginning’
By Sydney LakeDecember 2, 2025
15 hours ago
placeholder alt text
AI
More than 1,000 Amazon employees sign open letter warning the company's AI 'will do staggering damage to democracy, our jobs, and the earth’
By Nino PaoliDecember 2, 2025
21 hours ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.