View all newsletters
Sign up to our newsletters

Support 110 years of independent journalism.

  1. Science & Tech
25 November 2015updated 01 Jul 2021 1:30pm

Can Trident be hacked?

A former defence secretary has warned that Trident is vulnerable to cyber attacks. Is it?

By Barbara Speed

What if, in the event of a destructive nuclear war, the prime minister goes to press the red button and it just doesn’t work? 

This was the question raised by Des Browne, a former defence secretary, in an interview witht the Guardian this week. His argument, based on a report from the defence science board of the US Department of Defense, is that the UK’s Trident nuclear weapons could be vulnerable to cyberattacks, and therefore rendered useless if hacked. 

Browne called for an “end-to-end” assessment of the system’s cybersecurity: 

 The government … have an obligation to assure parliament that all of the systems of the nuclear deterrent have been assessed end-to-end against cyber attacks to understand possible weak spots and that those weak spots are protected against a high-tier cyber threat. If they are unable to do that then there is no guarantee that we will have a reliable deterrent or the prime minister will be able to use this system when he needs to reach for it.

Is he right? Should we really be worried about Trident’s potential cyber weaknesses?

Select and enter your email address Your weekly guide to the best writing on ideas, politics, books and culture every Saturday. The best way to sign up for The Saturday Read is via saturdayread.substack.com The New Statesman's quick and essential guide to the news and politics of the day. The best way to sign up for Morning Call is via morningcall.substack.com Our Thursday ideas newsletter, delving into philosophy, criticism, and intellectual history. The best way to sign up for The Salvo is via thesalvo.substack.com Stay up to date with NS events, subscription offers & updates. Weekly analysis of the shift to a new economy from the New Statesman's Spotlight on Policy team. The best way to sign up for The Green Transition is via spotlightonpolicy.substack.com
  • Administration / Office
  • Arts and Culture
  • Board Member
  • Business / Corporate Services
  • Client / Customer Services
  • Communications
  • Construction, Works, Engineering
  • Education, Curriculum and Teaching
  • Environment, Conservation and NRM
  • Facility / Grounds Management and Maintenance
  • Finance Management
  • Health - Medical and Nursing Management
  • HR, Training and Organisational Development
  • Information and Communications Technology
  • Information Services, Statistics, Records, Archives
  • Infrastructure Management - Transport, Utilities
  • Legal Officers and Practitioners
  • Librarians and Library Management
  • Management
  • Marketing
  • OH&S, Risk Management
  • Operations Management
  • Planning, Policy, Strategy
  • Printing, Design, Publishing, Web
  • Projects, Programs and Advisors
  • Property, Assets and Fleet Management
  • Public Relations and Media
  • Purchasing and Procurement
  • Quality Management
  • Science and Technical Research and Development
  • Security and Law Enforcement
  • Service Delivery
  • Sport and Recreation
  • Travel, Accommodation, Tourism
  • Wellbeing, Community / Social Services
Visit our privacy Policy for more information about our services, how New Statesman Media Group may use, process and share your personal data, including information on your rights in respect of your personal data and how you can unsubscribe from future marketing communications.
THANK YOU

Tangled webs 

The first, crucial thing to note is that Trident is not connected to the “internet” we use every day. Sure, it’s connected to the main Ministry of Defence network, but this operates totally independently of the network that you visit Facebook through. In cyber-security terms, this means the network is “air-gapped” – it’s isolated from other systems that could be less secure. 

In our minds, Trident is old and needs replacing (the submarines began patrolling in the 1990s), but any strike would be ordered and co-ordinated from Northwood, a military bunker 100m underground which would use the same modern networks as the rest of the MoD. Trident is basically as secure as the rest of the MoD. 

What the MoD said

I asked the Ministry of Defence for a statement on Trident’s security, and while it obviously can’t offer much information about how it all actually works, a spokesperson confirmed that the system is air-gapped and added: 

We wouldn’t comment on the detail of our security arrangements for the nuclear deterrent but we can and do safeguard it from all threats including cyber.

What security experts said

Security experts agree that an air-gapped system tends to be more secure than one connected to the internet. Sean Sullivan, a security adviser at F-secure, told Infosecurity magazine that while some hackers have been able to “jump” air-gaps using code, this would cause “interference” at most and a major attack of this kind is still “a long way off”. 

Franklin Miller, a former White House defence policy offer, told the Guardian that the original report cited by Browne was actually formulated in response to suggestions that some US defence networks should be connected to the internet. In that case, it actually represents an argument in favour of the type of air-gapped system used by the MoD. 

So… can it be hacked?

The answer is really that any system could be hacked, but a specialised, independent defence network is very, very unlikely to be. If a successful hack did happen, it would likely affect all aspects of defence, not just Trident. That doesn’t mean that every effort shouldn’t be made to make sure the MoD is using the most secure system possible, but it also means that scaremongering in the context of other, unrelated cybersecurity scares is a little unjustified. 

Content from our partners
The promise of prevention
How Labour hopes to make the UK a leader in green energy
Is now the time to rethink health and care for older people? With Age UK

Select and enter your email address Your weekly guide to the best writing on ideas, politics, books and culture every Saturday. The best way to sign up for The Saturday Read is via saturdayread.substack.com The New Statesman's quick and essential guide to the news and politics of the day. The best way to sign up for Morning Call is via morningcall.substack.com Our Thursday ideas newsletter, delving into philosophy, criticism, and intellectual history. The best way to sign up for The Salvo is via thesalvo.substack.com Stay up to date with NS events, subscription offers & updates. Weekly analysis of the shift to a new economy from the New Statesman's Spotlight on Policy team. The best way to sign up for The Green Transition is via spotlightonpolicy.substack.com
  • Administration / Office
  • Arts and Culture
  • Board Member
  • Business / Corporate Services
  • Client / Customer Services
  • Communications
  • Construction, Works, Engineering
  • Education, Curriculum and Teaching
  • Environment, Conservation and NRM
  • Facility / Grounds Management and Maintenance
  • Finance Management
  • Health - Medical and Nursing Management
  • HR, Training and Organisational Development
  • Information and Communications Technology
  • Information Services, Statistics, Records, Archives
  • Infrastructure Management - Transport, Utilities
  • Legal Officers and Practitioners
  • Librarians and Library Management
  • Management
  • Marketing
  • OH&S, Risk Management
  • Operations Management
  • Planning, Policy, Strategy
  • Printing, Design, Publishing, Web
  • Projects, Programs and Advisors
  • Property, Assets and Fleet Management
  • Public Relations and Media
  • Purchasing and Procurement
  • Quality Management
  • Science and Technical Research and Development
  • Security and Law Enforcement
  • Service Delivery
  • Sport and Recreation
  • Travel, Accommodation, Tourism
  • Wellbeing, Community / Social Services
Visit our privacy Policy for more information about our services, how New Statesman Media Group may use, process and share your personal data, including information on your rights in respect of your personal data and how you can unsubscribe from future marketing communications.
THANK YOU