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HomeCybersecurity 101
VPN

What Is a VPN and Is It Secure?

Written by: Monica Burgess

Published: 2/25/2026

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A VPN, or Virtual Private Network, is a service that creates a secure, encrypted connection between your device and the internet. It helps protect your online activity from prying eyes, ensuring your information stays private.

VPNs work by routing your internet traffic through an encrypted tunnel, hiding your IP address, and making it harder for hackers, advertisers, or even your internet service provider (ISP) to track your online behavior. Essentially, it acts as a privacy shield, especially when using public Wi-Fi or accessing sensitive work files remotely.


Key takeaways

  • The Fundamentals of VPNs: Understand how Virtual Private Networks create secure, encrypted "tunnels" to mask your IP address and shield your online activity from prying eyes.

  • Beyond Basic Privacy: Learn why a VPN is a critical line of defense for remote work and sensitive transactions, while recognizing the security limitations that require additional safeguards.

  • Addressing Vulnerabilities: How cybercriminals target VPN weaknesses and why a "set it and forget it" approach can lead to a false sense of security.

  • Pro-Level Security Tactics: Get actionable steps to harden your connection using Multi-Factor Authentication (MFA), IP allowlisting, and geolocation restrictions.

How does a VPN work?

When you connect to a VPN, your data is sent through a secure tunnel to a VPN server. This process encrypts your information, making it unreadable to anyone trying to intercept it. Additionally, the VPN server assigns you a new IP address, which helps mask your actual location. This combination of encryption and anonymity makes VPNs a vital tool for protecting your cybersecurity.

VPNs are not foolproof, though—they depend heavily on the provider you choose. A no-log VPN, for example, ensures that the service doesn’t store your data or browsing history, minimizing the chances of your personal information being exposed. Make sure to use reputable VPN services and steer clear of free ones, which often lack robust security features.

Why are VPNs important for cybersecurity?

If you're wondering why you should care about VPNs, know this—they're a key line of defense against cyber threats. By encrypting all your data, VPNs secure sensitive information like login credentials, emails, or financial transactions. This is particularly useful for anyone working remotely or handling confidential business data.

Even the U.S. Cybersecurity & Infrastructure Security Agency (CISA) emphasizes the importance of VPNs as a tool for securing your network when working away from secured environments.

The reality check: VPNs aren't bulletproof

Here's the thing, though—VPNs aren't the silver bullet some people think they are. We've seen threat actors get creative and find ways around VPN protections. They're not just sitting around waiting for you to accidentally connect to a sketchy Wi-Fi network.

Real talk: cybercriminals have been targeting VPN vulnerabilities directly. Take the SonicWall VPN exploitation incidents, for example—threat actors found ways to exploit vulnerabilities in VPN products themselves or simply logged in using stolen credentials they'd acquired elsewhere. When your "secure" connection becomes the entry point, that's a problem.

The bottom line? A basic VPN setup might give you a false sense of security. It's like having a really good lock on your front door but leaving your windows wide open.

Locking down your VPN: Beyond the basics

Want to actually secure your VPN? You'll need to go beyond just flipping the "on" switch. Here's what separates the pros from everyone else:

  • Multi-Factor Authentication (MFA): This one's non-negotiable. Even if someone gets their hands on your VPN credentials, MFA adds that extra layer of "nope, not today."

  • IP Allowlisting: Only allow connections from known, trusted IP addresses. It's like having a bouncer at your digital door who actually checks the guest list.

  • Geolocation restrictions: Set up rules that block connections from suspicious locations. If your team is based in Denver but someone's trying to connect from a sketchy server farm overseas, that's worth investigating.

These aren't just nice-to-have features—they're essential configurations that can mean the difference between a secure remote connection and becoming the next security incident report.

However, it's important to pair a VPN with other security measures, like antivirus software and strong passwords. A VPN alone can't protect against all cybersecurity threats, but when properly configured with these additional safeguards, it plays a significant role in fortifying your online privacy.

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FAQs

Look for a VPN with strong encryption protocols, a no-log policy, and trustworthy reviews. Avoid free VPNs, as they often lack the necessary security features. Learn more in our blog post by Matt Kiely and Erin Meyers, "Mommy, Does Santa Like NordVPN?"

A VPN helps protect your data by encrypting it, but it won’t protect your device from malware or phishing attacks. Use it alongside antivirus software for better protection.

No, your ISP can’t see your online activity when you use a VPN. However, they can see that you’re connected to a VPN server.

VPNs are legal in most countries, but some, like China or Russia, have restrictions on their use. Always check local laws before using a VPN. 

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