How do militaries of the modern age protect their networks from cyber-attacks?

Barshan Karmakar
Barshan Karmakar
Intern - Policy & Advocacy, CyberPeace
PUBLISHED ON
Dec 21, 2025
10

In the digital era of the present day, a nation’s strength no longer gets measured only by the number of missiles or aircraft it has in its inventory. Rather, it also calls for defending the digital borders. Major infrastructures like power grids and dams are increasingly being targeted by cyberattacks in the global security environment that modern militaries operate in. When communication channels are vulnerable to an information breach, cybersecurity becomes a crucial component of national defence. 

Why is cybersecurity a crucial national security concern in the modern era?

The technologies and procedures that shield digital devices, networks, and systems from unwanted access or attacks are referred to as cybersecurity. Cyberattacks are silent in the context of national security, in contrast to conventional warfare. They are swift and are also capable of causing a massive disruption without even a single case of physical infiltration. However, hostile states, terrorist organisations, or criminal networks may be able to steal any classified information or disrupt military infrastructure due to a cybersecurity breach in a military network. 


To fully comprehend the significance of cybersecurity, let's examine the various approaches, such as: 

  • Protecting critical infrastructures- Today's nations rely heavily on digital networks to run vital services like banking, transportation, electricity, water supply, and healthcare. Therefore, a cyberattack on these systems could cause problems across the country and interfere with our daily activities. Therefore, it is also seen that the military forces of a nation closely work in synergy with other government agencies and private organizations to create a strong ecosystem of security in this sector. 
  • Safeguarding military operations in the present age- The armed forces heavily rely on digital tools for communication, mission planning, surveillance, and coordination. In case the cyber intruders get access to those systems, then a lot of major operational hurdles can come up in the form of breach of mission details, disruption of channels, and compromise of the confidentiality of military operations. These are certain conditions that make cybersecurity an important aspect for protecting the physical bases and the security architectures. 
  • Preventing cyber warfare- With the evolution of the geopolitical landscape, state and non-state actors are now resorting to cyberattacks to gather intelligence, disrupt security networks, and influence political outcomes. Still, strong cybersecurity can help nations to ensure, detect, defend, and respond to threats in an effective manner. 
  • Securing government databases- The government databases are known for storing sensitive information about the citizens, military assets, diplomatic data, and vital information related to major national infrastructures. If these get compromised, then it can weaken the strategic position of the nation and put the national security of the nation at a grave risk. Therefore, it becomes necessary to protect government data as a priority. 

How can countries improve their cybersecurity defences?

Countries all over the world are developing their cyber capabilities using a variety of tactics to protect against the increasing number of cyber threats. A few of these can be interpreted as;

  • Creating cyber defence units- The majority of contemporary armed forces have created specialised cyber domains devoted to threat identification. Their responsibilities have been centred on keeping an eye on those dangers, stopping intrusions, and reacting quickly to cyberattacks. 
  • Public-Private Partnerships- To safeguard vital industries like energy grids, financial networks, and communication systems, the government collaborates with private businesses and technology suppliers. Additionally, these collaborations foster innovation to improve the overall defence against cyberattacks.
  • Establishing international collaborations- Cyber threats do not respect our borders. As a result, which countries are increasing their share of intelligence, best practices, and defensive strategies with their allies? Groups like NATO have conducted a joint cyber defence exercise to prepare for dealing with a digital future. 

However, these collaborations can help to develop a united front against cybercrime. 

Core Pillars of the modern military cyber defence

The modern defence strategies have been built upon several key designated pillars that are designed to prevent, detect, and respond to cyber threats, which can be mentioned as; 

  • Cyberspace as an operational domain- Militaries have now begun to treat cyberspace like the land, air, sea, and space as domains where wars can both begin and also end. Developing some dedicated cyber units to conduct digital operations to defend networks and engage in a range of counter-cyber activities when required. 
  • Active and proactive defence- Instead of passively waiting for the attacks to happen, real-time monitoring tools are used for blocking the threats that arise. Proactive defence goes a step further by hunting for potential threats before they can reach the networks. 
  • • Protection of vital infrastructures- The armed forces collaborate closely with civilian organisations and agencies to secure vital infrastructures that are important to the country. Critical infrastructure is protected from cyberattacks by layered defence, which includes encryption, stringent access control, and ongoing monitoring. 
  • • Strengthening alliances- Countries can develop a strong and well-coordinated defence system by exchanging intelligence to carry out cooperative cyber operations. 
  • Fostering innovation for the development of a workforce- Cyber threats evolve at a rapid pace, which calls for the military to invest in advanced technologies like AI-driven systems, secure cloud technologies, besides ensure continuous training related to cybersecurity.   

Conclusion

The modern militaries have adopted the method of protecting digital networks to defend their land and seas. Cybersecurity has become the new line of defence to protect government data and vital defence infrastructure from serious and unseen threats. The countries are building a secure, robust, and resilient digital future with the aid of solid alliances, cutting-edge technologies, knowledgeable workers, and a proactive defence strategy. 

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PUBLISHED ON
Dec 21, 2025
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