What is ‘Zero Trust’ Cybersecurity

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By Tom Bull

In an increasingly interconnected world, the need for robust cybersecurity measures has become paramount. Cyber threats, such as ransomware attacks, have the potential to wreak havoc on both businesses and individual users.

In response to these evolving challenges, the concept of Zero Trust has emerged as a powerful security framework. Zero Trust operates under the assumption that no user or device should be inherently trusted…guilty until proven innocent!

What Is Zero Trust?

Zero Trust is an approach to cybersecurity that challenges the traditional model of trust within networks. Instead of assuming that internal networks are safe, Zero Trust adopts a more cautious perspective, treating all devices, users and network traffic as potentially compromised until proven otherwise. It aims to minimize the risk of unauthorized access, data breaches, and the ability for a bad actor to move around within a network.

The principles of Zero Trust revolve around verifying and validating every user and device accessing a network. This is achieved through a combination of rigorous authentication, continuous monitoring and access control policies. By implementing these principles, organizations can significantly enhance their security posture and mitigate the potential impact of cyber threats.

Zero Trust for
Businesses

Ransomware attacks have become increasingly prevalent in recent years, targeting businesses of all sizes. By adopting a Zero Trust approach, organizations can limit the potential damage caused by these attacks. Zero Trust strategies involve segmenting networks, implementing strict access controls, and closely monitoring network activity to detect and respond to potential threats promptly.

Data breaches can have severe consequences for businesses, leading to financial loss, reputational damage, and legal implications. Zero Trust helps organizations safeguard their sensitive data by implementing robust authentication mechanisms, encryption protocols, and access controls. By adopting this approach, businesses can ensure that only authorized individuals have access to critical information, even if other parts of the network are compromised.

Zero Trust for
Residential Users

Residential users, particularly those responsible for the well-being of aging parents, grandparents or children, can also benefit from the principles of Zero Trust. By implementing stringent security measures, such as robust authentication and access controls, residential users can protect their loved ones from potential cyber threats, including phishing attempts, malware infections and unauthorized access to personal information.

To enforce the principles of Zero Trust effectively, software solutions can play a crucial role. By installing specialized software local and network activity is analyzed for a period of 30 days. This analysis allows the software to establish a baseline of trusted behavior for each user and device.  

After the baseline is established, the software employs access controls that prohibit the execution or installation of any new software without an administrative login. So the “custodian” of the computer that’s being protected would have to enter a password to allow any software to be installed, or to allow a device to be added .  This method guarantees that nothing can be installed maliciously or by accident.  

It may be considered an extreme approach to data and device protection, but it works great!

Tom Bull has been in the computer and technology field since 1981. He spent 25 years working with small businesses to manage their technology before starting Two River Computer in Fair Haven in 2006. 

The article originally appeared in the April 4 – 10, 2024 print edition of The Two River Times.