Are your network defences robust enough to handle the sophisticated cyberthreats of today? What safeguards do you have to take to protect the data of your company? These issues are more important than ever as cyberattacks grow more common, complex, and destructive. Threats to organisations are ever-present, ranging from phishing schemes and advanced persistent threats (APTs) to ransomware and data breaches. The stakes are getting bigger by every day passing by. Your entire network could be compromised by a single flaw, exposing private information and jeopardising the ongoing operations of your company. However, there are some practices to prevent your network’s security. In this blog we will learn top 7 network security best practices in 2025.

Table of content:

1. What is Network Security?

2. Top 7 Network Security Best Practices In 2025

• Regular Data Backups
• Network Audit & Security Check
• Implement Zero-Trust Architecture
• Timely Update your Anti-Malware Software
• Access to PCAP
• Prevent Social Engineering Attacks
• Collect Data In SIEM

2. Top 5 Network Security Trends

3. Case Study: The Equifax Data Breach

4. Conclusion

What Is Network Security?

Any action intended to preserve the integrity and usefulness of your data and network is referred to as network security.Thus, to put it in simple words protecting data from hackers and ensuring that users have access to the resources they require. The four key elements of network security are Firewalls, intrusion prevention systems, network access control and data security.

Top 7 Network Security Best Practices In 2025

There are numerous network security practices to protect the sensitive data and information from cyber attacks. The following list includes some of the best network security practices in 2025.

1. Regular Data Backups

The organisations primarily store, collect, and produce a vast amount of data, and losing control of this data results in a loss for the organisations. Thus, frequent data backups are one of the best network security practices since they protect the data from any kind of data loss. As a result, data backups at regular intervals enable people to safeguard important information against various risks.

Advantages

• It is among the best methods for preventing data loss because it includes a variety of crucial company information.
• To prevent file loss, it is a good idea to make at least three copies of the files.
• Regular data backups will ensure that you don't lose all of your data because of cyber attacks, accidental deletions and other threats.

2. Network Audit & Security Check

Maintaining a secure environment requires knowledge and comprehension. Therefore, it is crucial that the information technology organisation conduct a network audit in order to have a precise view of the level of security. The overall effectiveness of the security architecture is verified through auditing.

Advantages

• People who work in IT might use it to find possible threats that require additional investigation.
• It assists in figuring out the overall strength of the firewall.
• Additionally, it helps in assessing the condition of the networked servers, software, applications and equipment.

3. Implement Zero-Trust Architecture

Implementing zero trust entails a policy that, regardless of a device or user's location inside the network, always verifies their rights and validity. Network access control (NAC) technologies and network segmentation based on the areas you need to protect the most are essential to implementing zero trust. After determining which of your assets are the most sensitive, you must map out the traffic flow to these network segments and design your zero-trust system appropriately.

Advantages

• ZTA reduces the number of possible avenues of entry for attackers by requiring stringent authentication and presuming that every access request is potentially malicious.
• Granular access controls and real-time authentication enable security teams to quickly locate and isolate affected systems.

• ZTA assists in preventing data breaches and unauthorised access by limiting access to sensitive data according to user identity and context.

4. Timely Update your Anti-Malware Software

Another best practice is updating the antimalware software, which is one of the simplest to do. By ensuring that all devices are running primarily the most recent security software, security professionals should be able to do routine tests on their antimalware program.

Advantages

• To keep the devices safe, the antimalware program must be updated on a regular basis.
• The device is protected from attacks by turning on the active protection feature or real-time scanning.

5. Access to PCAP

Package capture, or PCAP, is the process of intercepting a data packet as it travels across a network and temporarily storing it for further analysis for security reasons. As a result, one of the packets is intercepted and momentarily kept for analysis.

Advantages

• The packet's primary function is inspection, which aids in diagnosing and resolving issues with the network security policies being adhered to.
• It assists in identifying security incidents, instructions, and unexpected increases in network traffic.

6. Prevent Social Engineering Attacks

Another crucial network practice is keeping an eye out for social engineering attacks, which are designed to trick people into giving up their passwords and access credentials. The majority of their reliance is on exploits rather than system vulnerabilities. Consequently, it is well recognised that social engineering is the primary component of most cyberattacks.

Advantages

• Social engineering attacks can be avoided with the use of email filtering technologies and the implementation of secure password restrictions.
• Regularly reviewing your access credentials might help defend against social engineering scams.
• Social engineering attacks can also be avoided by using multi-factor authentication and keeping an eye on network traffic.

7. Collect Data In SIEM

Network activity is analysed by the event management and security information technologies. As a result, the quality of the data that is sent into SIEMs and other security analytics tools depends on it. These systems cannot do the necessary correlation to provide businesses the insights they need if they do not have high-quality data.

Advantages

• The SIEM platforms compile real-time warnings and historical data from IT systems and security solutions.
• They aid in data analysis and relationship building, which aids in vulnerability identification.

Case Study: The Equifax Data Breach

In 2017, Equifax, a leading credit reporting agency, faced a massive data breach that exposed sensitive financial information of nearly 150 million customers. The breach occurred due to an unpatched vulnerability in their web application framework. Hackers exploited this flaw and launched a Man-in-the-Middle (MiTM) attack to intercept and steal personal data.

The attackers used techniques like SSL spoofing and DNS manipulation to redirect users to fake websites. Unsuspecting customers entered their login credentials, which were captured by the hackers. In addition to the web application breach, Equifax also identified security flaws in its mobile apps that left users vulnerable to further MiTM attacks. As a precaution, the company removed these apps from the Apple App Store and Google Play.

This breach serves as a critical reminder of the risks posed by unpatched software vulnerabilities and emphasizes the need for robust network security measures.

Last Thoughts

In 2025 network security is more critical than ever as cyber threats continue to evolve and grow in complexity. By implementing the best practices for network security such as regular data backups, network audits, zero trust architecture, regularly updating anti malware systems, accessing to PCAP, preventing social engineering attacks and collecting data in SIEM organizations can significantly enhance their security protocols. These practices not only protect sensitive data but also ensure the seamless functioning of network operations.

At NG Networks, we empower professionals with the right skills set to navigate with the dynamics of network security. Our Cisco Certified Networking Associate (NDS) program is designed to equip you with a strong foundation in network management and security. This is currently one of the best networking courses in the market which covers all the essential concepts required to handle the responsibilities of a network administrator while also preparing you for advanced-level certifications. For more information reach to us at info@ngnetworks.in