The Top 7 Network Security Vulnerabilities to Avoid

In today’s digital era, collecting, storing, analyzing, and protecting data are critical to the success of most businesses. And in this environment, network vulnerabilities are more than just an IT problem; they are direct threats to the core of business operations.

Although there are many types of network vulnerabilities, most of them share a very common root cause: as reported by Cybernews, a staggering 95% of cybersecurity breaches are caused by human error.

“As the value of data keeps growing, so do the threats to that data. Accordingly, your business’s ability to ensure the confidentiality, integrity and availability of critical data has become an absolute necessity to long-term viability and competitiveness.” ~George Terrone, Co-Founder of ITSco.

In this blog, we’ll identify some critical network security vulnerabilities and provide practical solutions to fortify your defenses against them.

Types of Vulnerabilities in Network Security

In the intricate landscape of network security, understanding the different types of vulnerabilities is key to developing a robust defense strategy, as each vulnerability presents a unique challenge that demands a tailored solution.

1. Unpatched Software: A Gateway to Cyber Vulnerabilities

Understand the Risks of Outdated Software
Regularly updating software is not just a best practice; it’s a crucial barrier against network attacks. Cybercriminals often exploit known vulnerabilities in outdated software, leading to significant security breaches.

For instance, the WannaCry ransomware attack in 2017, which affected over 200,000 computers globally, exploited a vulnerability in Microsoft Windows that had been patched months before the attack.

Action Steps to Avoid This Type of Attack in Network Security:

  • Implement a regular schedule for software updates
  • Utilize automated patch management tools
  • Regularly audit your software for any unaddressed vulnerabilities


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2. Weak Passwords: The Achilles’ Heel of Network Security

Strengthening Your First Line of Defense
Weak passwords are a common network vulnerability, often leading to unauthorized access. A Verizon report found that 81% of hacking-related breaches leveraged either stolen or weak passwords.

How to Avoid this Cyber Vulnerability:

  • Encourage the use of complex, unique passwords
  • Ensure that default passwords (from vendors or manufacturers) are always changed
  • Implement password management tools
  • Adopt multi-factor authentication for added security

3. Phishing Attacks: A Prevalent Cyber Threat

Navigating the Deceptive Waters of Phishing
Phishing attacks, where attackers masquerade as trustworthy entities to obtain sensitive information, are a major type of attack in network security.

The Anti-Phishing Working Group reported over 200,000 unique phishing campaigns in the first half of 2020 alone.

Prevent Phishing Attacks When You:

  • Educate employees on identifying suspicious emails and links
  • Use email filtering tools to block potential phishing emails
  • Establish clear protocols for handling suspicious communications

Quick Guide to Mitigating Network Vulnerabilities:


Vulnerability Type Key Risk Immediate Action Step
Unpatched Software Exposure to known exploits Schedule regular updates
Weak Passwords Unauthorized access Implement complex passwords and MFA
Phishing Attacksp Data theft Train employees and use email filters
Insider Threats Internal breaches Restrict access and monitor activities
Malware System compromise Install and update anti-malware software
Inadequate Policies Inconsistent security practices Regularly update security policies
IoT Vulnerabilities Increased attack surface Separate network and regular updates


4. Insider Threats: The Hidden Menace Within

Mitigating Risks from Within Your Organization
Insider threats, whether malicious or accidental, pose significant information security vulnerabilities.

The 2020 Insider Threat Report by Cybersecurity Insiders revealed that 68% of organizations feel moderately to extremely vulnerable to insider threats.

Action Steps:

  • Make sure your company’s security policies are thoroughly written, regularly audited, and strictly enforced
  • Implement strict access controls and user privileges
  • Conduct regular security training for employees
  • Monitor and audit internal data access and activities

5. Malware: A Persistent Digital Plague

Combatting Malware Infections
Malware continues to be a prominent cyber security vulnerability, with a report from AV-TEST indicating over 350,000 new malware programs are detected every day.

How to Avoid Malware:

  • Install robust antivirus and anti-malware software
  • Regularly update your security systems to detect new threats
  • Educate users on safe browsing practices and email hygiene
Discover even more resources regarding cybersecurity:

6. Inadequate Network Security Policies: A Root of Cyber Vulnerabilities

Crafting Strong Policies for Robust Defense
Lack of comprehensive network security policies can lead to various types of network security threats. A strong policy not only guides the organization in preventive measures but also in responding to incidents.

Do this by:

  • Developing clear, comprehensive security policies.
  • Regularly reviewing and updating these policies.
  • Conducting periodic security audits to ensure policy compliance.

7. IoT Vulnerabilities: Securing the New Frontier

Protecting the Expanding Network of Devices
IoT devices contribute significantly to network vulnerabilities due to their often-lax security measures. Gartner estimates that there will be over 25 billion IoT devices by 2021, each a potential entry point for attackers.

Action Steps:

  • Ensure IoT devices are on a separate network
  • Regularly update IoT device firmware
  • Employ security measures like encryption and strong authentication



Prevent Information Security Vulnerabilities with ITSco as Your IT Partner

To secure your network effectively, partnering with experts like ITSco is crucial. With our comprehensive approach to cybersecurity, we tailor solutions to your specific needs, ensuring robust protection against evolving threats.



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Contact ITSco today for a free consultation, and let’s collaboratively secure your digital future.

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