How Secure Are Defense Computers?

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Defense computers are generally used in military, commercial, and industrial applications where added security is needed to keep information intact and prevent unwanted leaks. At times, hackers get hold of confidential information that can ruin major development plans or pose a threat at a national level. To prevent this, defense computers must possess multiple layers of security.


Let’s find out more about defense computers and how secure these are.

The concept of adding numerous security layers to protect confidential information in the military and other significant entities is known as ‘defense in depth’. This term is commonly used in the IT industry and is often a backup strategy when the system becomes vulnerable. This strategy protects any kind of technical, personnel, physical, or procedural security failure for a prolonged period. This defense mechanism works in protective layers. Defense in depth in computing and defense in depth in the military are marginally different strategies; the former works on the basis of instilling multiple layers of security whereas the latter portrays a loose defense perimeter to attack the opponent at the right moment.

Here are some protective layers of security or strategies that are commonly found in defense computers –

Network Security
This category of security aims at protecting data during browsing. When left unprotected, others can access your personal information online, causing a data breach. These strategies protect your computer and personal information during network access.

Virtual Private Network or VPN
A private network that allows information to be accessed and sent over a wider public network is known as a VPN. It uses an encrypted layer to protect information across the network.

The best way to prevent unauthorized access to hackers and other users in your system is by using a firewall. A set of security measures are implemented that blocks outbound and inbound traffic from penetrating.

System Security
The protective layers used for system security ensure the authenticity of any file or software that is downloaded or already exists in the system. Failing to do so can cause a data breach from within the system.

Encryption converts plaintext into ciphertext, which is a form of coded language or encoded information. Unless the key to the encryption is not provided, the text is completely undecipherable.

Antivirus Software
Antivirus or anti-malware software is used because firewalls do not provide optimum security and protection against a data breach. Similar software programs and layers include email filtering and anti-phishing software programs.

Multi-factor Authentication
The user must provide some concrete evidence to prove their authenticity before accessing the system. It is usually in the form of inherence (like a fingerprint), knowledge (passwords), and possession (like a key to a lock). Unless the user doesn’t enter these authenticity factors, access to the system is denied.

With this system, the user can separately run different programs. By doing this, the user can not only test the authenticity and efficiency of a new software program but also control system vulnerabilities and system failures.

Vulnerability Scanners
These scanners test the weaknesses or inefficiency of a software program or an application. This enhances the integrity of a system and makes it more secure. Whether it’s a firewall, a router, or a web server, a vulnerability scanner detects major flaws.

Intrusion Detection Systems or IDS
This system basically detects any kind of violation of framed laws and policies caused in a system or a network, which is then forwarded to a SIEM or a Security Information and Event Management system.


Even if a defense computer is configured to provide maximum security, certain malfunctions and data breach can still affect or delete important files in the system. This can also happen due to sudden power outages or misuse of the system. Defense computers are wired to protect and recover data during such instances.

Defense computers are generally fed with operating systems that help restore data up to a certain or predetermined state. Developers at recommend using data storage systems that maintain system integrity while safely storing and recovering important data. This system also allows the user to delete unwanted or malicious files that have crept in unknowingly.

The best way to avoid losing important files and restoring them is to have a backup of your data. A regular backup procedure is highly advised for all entities, especially if the information is too precious to lose.

Lastly, specific attention is paid to prevent the download of malicious software that could cause a data breach. These are the basic strategies or layers of protection applied in most defense computers. The configuration of such computers varies according to the level of security needed and the type of entity it is used.

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Arnov Rahman

Arnov Rahman

Arnov is a Marketing Manager at SqueezeCMM, a B2B content marketing and analytics start up. He is fascinated by the intersection of technology, marketing, and people in the development of awesome products. He's into life-hacking, psychology, and data-science.
Arnov Rahman

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