Can a VPN Be Hacked? What You Need to Know About VPN Security in 2026

Also on CyberFence: compare CyberFence to other VPNs side-by-side · CyberFence versus Proton VPN on jurisdiction and price .

Yes, a VPN can be hacked. That's the honest answer — and it's worth understanding exactly how, because the mechanism of compromise tells you what actually matters when choosing a VPN that protects you.

The encryption itself — AES-256-GCM — is not what gets broken. Brute-forcing AES-256 encryption is computationally infeasible with any technology currently available or projected for decades. No one is cracking your VPN tunnel by attacking the cipher.

What actually gets compromised are the systems around the VPN: the software with its own vulnerabilities, the credentials used to authenticate, the servers handling the traffic, and the VPN provider's own infrastructure. Understanding these attack vectors tells you what to look for in a trustworthy VPN.

How VPNs Actually Get Hacked

1. Software Vulnerabilities in VPN Clients and Servers

Enterprise VPN appliances have become one of the most targeted attack surfaces in cybersecurity. VPNs are high-value targets because compromising a VPN gateway gives an attacker access to everything behind it — entire corporate networks, not just individual machines.

The 2024-2025 track record of major enterprise VPN products illustrates the problem (Todyl, 2025):

• Ivanti Connect Secure — Multiple zero-day vulnerabilities in early 2024 gave attackers unfettered remote access before patches were available. Actively exploited by nation-state actors targeting government networks.
• Fortinet SSL-VPN — CVE-2023-27997 allowed remote code execution with no authentication. One of the most widely exploited VPN vulnerabilities in the past three years.
• SonicWall SSL-VPN — A series of critical flaws in 2024-2025 exposed SonicWall users to Akira ransomware attacks. A backdoor discovered in SMA 100 appliances (OVERSTEP malware) forced end-of-life announcements.
• Palo Alto GlobalProtect — Privilege escalation vulnerability patched in 2024 after active exploitation was documented.

These are all enterprise VPN products — the kind used by corporations, not the consumer VPN apps most individuals use. Consumer VPN apps run on different infrastructure. But the principle applies: any software can have vulnerabilities, and VPN providers that don't update aggressively leave their users exposed.

2. Stolen or Compromised Credentials

This is the most common real-world VPN attack vector for individuals. The VPN encryption isn't broken — the attacker simply has your legitimate username and password, so they authenticate normally.

Credential theft happens through:

• Phishing attacks that capture VPN login credentials
• Credential stuffing — testing passwords stolen from unrelated data breaches against VPN login pages
• Infostealer malware that captures passwords saved in browsers, including VPN client credentials
• Man-in-the-middle attacks on unencrypted networks where VPN credentials are captured in transit before the encrypted tunnel is established

Multi-factor authentication directly prevents this entire category. Even if an attacker has your exact VPN username and password, they can't authenticate without the second factor. For anyone using a VPN for serious privacy or work security, MFA is non-negotiable.

3. DNS and IP Leaks

A leaking VPN isn't technically "hacked" — but it provides exactly zero privacy protection, which is functionally the same outcome. As covered in detail in our VPN leak detection guide, DNS leaks and WebRTC leaks can expose your real IP address and browsing activity to your ISP and network monitors even when you believe the VPN is active.

Studies have found that 23% of paid VPN applications leak DNS requests under specific conditions. This isn't the VPN being compromised by an external attacker — it's the VPN failing to do its job due to poor implementation.

4. Compromised VPN Provider Infrastructure

Your VPN is only as trustworthy as the company running the servers. If a VPN provider's servers are compromised, all user traffic routed through those servers can be captured — regardless of how strong the encryption between your device and the VPN is.

This is why the VPN provider's zero-log policy is not just a marketing claim — it's the difference between a breach that exposes months of your browsing history and a breach that exposes nothing. A VPN that stores no logs has nothing for an attacker to steal even if the server is compromised.

It's also why the jurisdiction and ownership of the VPN provider matters. A US-operated VPN under US law cannot silently hand user data to foreign governments. A foreign-operated VPN may be subject to laws or informal agreements that force cooperation with surveillance requests — requests users never know about.

5. Malicious or Compromised VPN Apps

Free VPN apps represent a particular risk. Multiple free VPNs have been documented as malware in disguise — apps that collect and sell user browsing data, inject ads into traffic, or bundle additional malware. A 2023 CSIRO study of free VPN apps found that 38% of Android free VPN apps contained malware. The irony is stark: users install a VPN for privacy and accidentally install a surveillance tool.

Even legitimate free VPN apps from well-intentioned providers often fail security tests. Without revenue from subscriptions, providers cut corners on server infrastructure, update frequency, and security audits.

What Can't Be Hacked: The Encryption Itself

To be clear about what is secure: a properly implemented AES-256-GCM encrypted VPN tunnel is effectively unbreakable with any current or near-future technology. The mathematics are unambiguous:

• AES-256 has 2²⁵⁶ possible keys — approximately 1.16 × 10⁷⁷ combinations
• Even if every computer on earth worked in parallel on brute-forcing an AES-256 key, the heat death of the universe would occur before a solution was found
• No known mathematical shortcut ("backdoor") has been found in AES-256 after 25+ years of public cryptanalysis by the global security research community

When you hear "VPN was hacked," it's almost never the encryption. It's the software bugs, the credentials, the infrastructure, or the provider's own security practices.

How to Choose a VPN That Doesn't Get Compromised

Verified Zero-Log Policy

A VPN that stores no connection logs, no activity logs, and no DNS query records has nothing for an attacker to steal — even in the event of a server breach. Look for specific technical claims about what data is and isn't stored, not vague marketing language.

Regular Security Audits

Reputable VPN providers submit to third-party security audits of their no-log claims and codebase. These audits don't eliminate all risk, but they demonstrate a commitment to accountability that self-certification doesn't provide.

Jurisdiction and Ownership

A US-based VPN is subject to US law — not the data retention laws of foreign jurisdictions, not informal intelligence-sharing arrangements between governments. US law does not compel VPN providers to maintain logs if they haven't collected them. A provider that collects no data cannot be compelled to produce data that doesn't exist.

AES-256-GCM Encryption

Specifically GCM mode (Galois/Counter Mode) — not the older CBC mode. GCM is both more secure (provides authenticated encryption) and faster. Any reputable modern VPN uses AES-256-GCM.

Active Update and Patch Policy

Consumer VPN clients with regular, automatic updates are less likely to be running vulnerable versions of the underlying software. A VPN app that hasn't been updated in months is a risk — not because the encryption broke, but because unpatched software bugs can be exploited.

No Free VPNs for Real Security

Free VPNs fund themselves through your data, through advertising insertion, or through bundled malware. None of those business models are compatible with genuine privacy. The $7.35/month cost of a premium VPN is the price of an infrastructure the provider has incentive to protect.

What Protects You Beyond the VPN

Even a perfectly implemented VPN doesn't protect against every attack. Completing your defense:

• Multi-factor authentication on your VPN account and all important services — prevents credential compromise from mattering
• Breach monitoring — real-time alerts when your credentials appear in a data breach; closing the response window before stolen credentials are tested
• DNS-level threat filtering — blocks phishing pages and malware sites before they load; prevents the infostealer infections that steal VPN credentials in the first place
• Up-to-date software — both the VPN app and your device OS; patches eliminate the vulnerability surface attackers probe

CyberFence combines the first three of these in one subscription: AES-256-GCM VPN with zero logs, Web Shield DNS filtering that blocks phishing and malware domains, and Breach Monitor for real-time credential surveillance.

Want to go deeper? Read the CyberFence competitor comparison hub , a full CyberFence vs. Proton VPN comparison , or the CyberFence DNS leak test .