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Cybersecurity Updated: 8 min read

The 7 Best VPNs of 2025 [Technical Analysis and Real Comparison]

Mauricio Vargas

Mauricio Vargas

Founder of Bitnotus | Technical Analyst and Web Developer

The 7 Best VPNs of 2025 [Technical Analysis and Real Comparison]
Table of Contents
Transparency: This article may contain affiliate links. We only recommend tools that we have thoroughly researched and consider useful for our readers. If you purchase through these links, Bitnotus may receive a commission at no additional cost to you.

🔍 What you’ll learn in this article

In 2025, protecting your privacy and online security is more important than ever. With the rise in digital surveillance, cyber attacks, and geographical restrictions in various countries, having a VPN that uses secure encrypted tunnels has become a key tool for keeping your information protected. In this technical comparison, you will find:

✅ Detailed comparison of the 7 best VPNs on the market with AES-256 encryption

✅ Technical analysis based on user-reported performance worldwide

✅ Personalized recommendations based on your user profile in different regions

✅ Step-by-step guide to configure your VPN with firewall and secure protocols


🔐 Technical evaluation criteria

🛡️ Privacy

Legal jurisdiction, independent audits, and verified no-logs policy. Especially important in countries with surveillance laws. See EFF's privacy guide.

🔒 Technical security

Modern protocols (WireGuard, OpenVPN, IKEv2), AES-256 encryption, secure encrypted tunnels, and protection against DNS/IP leaks with integrated firewall.

⚡ Speed and performance

Evaluation based on documented performance of each VPN, including connection speed, stability at different times, and server availability in various regions globally.

💰 Value for money

Available plans, discounts, and money-back guarantees, with local payment options for users worldwide.


🥇 The 7 best VPNs for 2025 (Detailed analysis)

1️⃣NordVPN: The most complete and balanced

NordVPN is the most balanced and reliable VPN on the market. It stands out for its speed, stability, and ease of use, with excellent performance worldwide. Its AES-256 encryption and integrated firewall (CyberSec) make it ideal for those looking to protect their daily browsing or work online with maximum online security.

Strengths:

  • Ultra-fast NordLynx protocol (based on WireGuard)
  • More than 5500 servers in 60 countries, including multiple locations in regions with limited digital freedom
  • Advanced features: double VPN with encrypted tunnels, Onion over VPN

❌ Cons:

  • Offers multiple advanced options that can be overwhelming for new users.

2️⃣Surfshark: Best value for money

Surfshark is the best alternative for those seeking quality at an affordable price. It allows you to connect all your devices and is ideal for families, students, and those who want hassle-free privacy, with support for IKEv2 protocol and excellent performance globally.

Strengths:

  • Unlimited connections on all devices
  • CleanWeb 2.0 (ad and malware blocker with integrated firewall)
  • Multihop servers with encrypted tunnels and camouflage mode

❌ Cons:

  • Lower speed on very distant servers

3️⃣ExpressVPN: The fastest and easiest to use

ExpressVPN is the preferred choice for those who prioritize speed and ease of use, especially for streaming and online gaming. Its application is intuitive, offers military-grade AES-256 encryption, and has excellent performance globally to bypass geographical restrictions.

Strengths:

  • TrustedServer technology (RAM-only) for maximum online security
  • Lightway protocol optimized for speed and compatible with IKEv2
  • Excellent for streaming and unblocking content with restrictions worldwide

❌ Cons:

  • Higher price than the competition

4️⃣ProtonVPN: The most transparent and secure

ProtonVPN is the perfect choice for those who value privacy and transparency above all else. Its technology and policies are oriented towards demanding users seeking maximum data protection.

Strengths:

  • Headquarters in Switzerland (strong privacy legislation)
  • Open-source and audited code
  • Secure Core (routing through secure countries)

❌ Cons:

  • Limited in speed, number of servers, and features (doesn't allow P2P, streaming, or Plus servers)

5️⃣CyberGhost: The easiest for beginners

CyberGhost is the most user-friendly VPN for those new to the world of digital privacy. Its interface is simple, and its preconfigured profiles make it easy to choose the best server for each activity.

Strengths:

  • Preconfigured profiles for different activities
  • 7000+ servers in 90 countries
  • 45-day money-back guarantee

❌ Cons:

  • Headquarters in Romania (EU member country with data retention laws)

6️⃣Mullvad: The most anonymous

Mullvad is the VPN for those seeking absolute anonymity and simplicity. It doesn't require personal data to register, and its focus is on extreme privacy, although its interface is more basic than other options.

Strengths:

  • No email or personal data required
  • Cash payment option
  • Headquarters in Sweden outside 14-Eyes jurisdiction

❌ Cons:

  • More basic interface and fewer support options

7️⃣Private Internet Access (PIA): The most customizable

PIA is the best option for those looking for a balance between price and functionality. It offers good speeds, multiple configuration options, and a very competitive price for daily use.

Strengths:

  • Advanced configuration options
  • Massive server network
  • Applications for all platforms

❌ Cons:

  • Headquarters in the USA (jurisdiction with surveillance laws)

🚦 Real-world test results: Speed and privacy

Speed comparison (Mbps)

VPN Download Upload Ping (ms)
NordVPN 210 195 18
ExpressVPN 230 180 22
Surfshark 185 170 25
ProtonVPN 175 160 30

*Data based on published benchmarks and technical documentation from providers. Average values with 300Mbps fiber connection.

Methodology: This data comes from comparative analyses published by specialized sources, official provider documentation, and independent reviews. Standard tools such as DNSLeakTest.com and IPLeak.net are commonly used to verify the protection against DNS and IP leaks offered by these VPNs.

Technical comparison of VPN protocols

Protocol Security Speed Stability
WireGuard High Excellent Very good
OpenVPN Very high Good Excellent
IKEv2 High Very good Excellent on mobile

*WireGuard uses modern cryptography and is the fastest, OpenVPN is the most tested and verified, while IKEv2 is ideal for mobile connections due to its automatic reconnection capability.


💼 Professionals and remote workers

Recommendation: NordVPN or ExpressVPN

Maximum stability and speed for international connections, essential for video conferences and secure remote access from regions with varying internet infrastructure.

🏠 Families and multiple devices

Recommendation: Surfshark

Unlimited connections and excellent value for money, ideal for protecting all household devices with a single plan.

🔰 Cybersecurity beginners

Recommendation: CyberGhost

Intuitive interface and predefined activity profiles, perfect for those just starting with online security.

🛡️ Maximum privacy and anonymity

Recommendation: Mullvad or ProtonVPN

Focus on extreme privacy and transparency, especially useful in regions with high government surveillance.

💻 Freelancers and digital nomads

Recommendation: ExpressVPN or NordVPN

Consistent performance on public networks and servers worldwide, essential for working from cafes or shared spaces.

🔄 Torrent and P2P users

Recommendation: PIA or NordVPN

Servers optimized for P2P, no bandwidth limits, and verified no-logs policies for maximum privacy in downloads.

🏢 Small businesses

Recommendation: NordVPN Teams or Perimeter 81

Business solutions with centralized management, ideal for remote teams in different countries with advanced security needs.


🔧 Configure your VPN for maximum security

Essential configuration checklist

✅ Step 1: Activate the Kill Switch

🔒 Ensures that internet traffic is automatically cut off if the VPN disconnects, preventing accidental leaks of your real IP.

✅ Step 2: Select WireGuard or OpenVPN protocol

🚀 These modern protocols offer the best balance between speed, security, and compatibility.

✅ Step 3: Activate DNS leak protection

🧠 Prevents your system from using your internet provider's DNS servers. Look for the "Prevent DNS leaks" or "DNS leak protection" option.

✅ Step 4: Configure auto-start

⚙️ Allows the VPN to start with your operating system (Windows/macOS), so your connection is always protected from startup.

✅ Step 5: Verify your configuration

🔍 Visit sites like dnsleaktest.com or ipleak.net to confirm that your VPN is working correctly and there are no leaks.

⚙️ Advanced configurations for technical users

🔧 Custom split tunneling

Configure your VPN so that only certain applications or websites use the encrypted tunnel, while others maintain your normal connection. Ideal for balancing security and speed, or for simultaneously accessing local and foreign resources.

🛡️ Integration with your own firewall

For Linux users or those with advanced knowledge, configure firewall rules (iptables, ufw, Windows Firewall) that work together with your VPN to create an additional layer of security and prevent data leaks if the VPN disconnects.

🌐 Manual DNS configuration

Use private and encrypted DNS servers such as NextDNS, AdGuard DNS, or Quad9 to protect against threats, DNS leaks, and improve your privacy beyond what your VPN offers by default.

🔐 Custom double VPN tunnel

Configure a second VPN on a virtual device or router to create a multi-level encryption chain. Advanced technique recommended for activists, journalists, or individuals with extreme privacy needs in regions with high censorship.


❓ Frequently asked questions about VPNs

Is it legal to use a VPN worldwide?
Yes, the use of VPNs is completely legal in most countries around the world. However, in some countries with stricter internet regulations, VPN use may be more restricted or monitored. Remember that illegal activities are still illegal even when using a VPN.
Is a free VPN enough to protect my privacy?
Free VPNs often have significant limitations in speed, number of servers, or technical support. Additionally, many of them display ads, store activity logs, or monetize your browsing data. While there are reliable exceptions like ProtonVPN Free, it's generally recommended to opt for paid services if you're looking for real privacy and sustained protection. In regions where digital privacy awareness is growing, having a reliable VPN can make a big difference.
Will a VPN slow down my Internet connection?
All VPNs slightly reduce speed due to the encryption process, but the best modern VPNs with protocols like WireGuard offer minimal impact. With a good VPN, the difference will hardly be noticeable in daily use, even in countries where internet infrastructure may vary.
Which VPN works best for accessing blocked content globally?
ExpressVPN and NordVPN are the most effective options for accessing content with geographical restrictions worldwide. Both maintain optimized servers that are regularly updated to evade streaming and web service blocks, offering the best experience for unblocking international content from various regions around the world.
Why is AES-256 encryption important in a VPN?
AES-256 encryption is a standard widely used in military, government, and financial environments for its high level of security. With current technology, there are no known practical attacks capable of breaking it when properly implemented. All VPNs recommended in this article use high-security encryptions such as AES-256 or ChaCha20, in combination with secure protocols like WireGuard, OpenVPN, or Lightway. This combination ensures that your traffic is protected against hackers, espionage, and digital surveillance.

📚 Additional resources

📝 Digital privacy guide
Coming soon
🎬 VPN video tutorial
In development
🛠️ Verification tools
Coming soon

💰 Price and plan comparison

Basic plans of recommended VPNs

VPN Monthly price (USD) Money-back guarantee Devices
NordVPN $11.99 30 days 6
ExpressVPN $12.95 30 days 5
Surfshark $12.95 30 days Unlimited
ProtonVPN $9.99 30 days 10
CyberGhost $12.99 45 days 7
Mullvad $5.00 30 days 5
PIA $11.95 30 days 10

*Monthly plan prices. All VPNs offer significant discounts on annual or biennial plans.

*Always check the updated prices on each provider's official website.

🗣️ Conclusion: The best VPN for 2025

After analyzing the overall performance reported by users worldwide and consulting reliable technical sources, NordVPN positions itself as the best overall VPN for 2025, offering a perfect balance between speed, security with AES-256 encryption, and robust encrypted tunnels for maximum protection.

For users with multiple devices, Surfshark offers the best value, while Mullvad is unbeatable in terms of absolute privacy with its support for IKEv2 protocol and advanced online security tools.

The choice of a VPN should be based on your specific needs and location. If you live in regions with limited internet freedom, pay special attention to providers with good server infrastructure in those areas to get better performance. All the options in this list offer excellent protection for your digital privacy in 2025.

Protect your privacy today with a reliable and secure VPN!

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