VPN vs ZTNA in 2026: What Changed (And Why it Matters)

For a long time, the Virtual Private Network (VPN) was the standard for network security at companies that offered remote work options. VPNs had all the tools needed to fill the security gaps created when remote users are working outside the perimeter of the trusted office network.

Early in the adoption of mobile work environments, VPNs performed well, providing encryption and tunneling to protect sensitive business data as it moves through the public internet from device to company server.

In the advanced threat landscape of 2026, a VPN is no longer enough to protect against the sophisticated threats remote workers face. The attack vectors used by cybercriminals have evolved from simple malware viruses to automated, AI-driven credential harvesting. Now, once cybercriminals have infiltrated the system, they use lateral movement to increase the spread of damage caused by the attack. Essentially, the VPN is being asked to protect a perimeter that no longer exists.

Zero Trust Network Architecture (ZTNA) offers a way to modernize and strengthen network security to defend against today’s threats. Contrasting the strategic elements of VPN with ZTNA illustrates why companies should adopt ZTNA in a time when modern attack vectors render the traditional castle and moat model of network security used by VPNs ineffective.

Inbound Gateway vs Outbound Connector Model

VPNs take an inbound approach to connectivity that makes network vulnerabilities visible to security threats. The VPN Gateway listens to the web, routing traffic between the private network and the internet. While the VPN Gateway encrypts data to protect it from surveillance, it sits on the network edge, announcing the presence of an entry point to bad actors. Scanners and automated exploit kits can target public-facing gateways almost immediately when a new vulnerability is discovered.

ZTNA takes an outbound approach to connectivity in which the connector cloaks the network. Unlike VPNs that use a gateway to listen for inbound access attempts from the internet, ZTNA uses an inside-out connectivity model in which a small connector inside the network reaches a secure cloud broker. This approach makes a company’s internal infrastructure invisible to the public web while giving authorized users full access.

Broad Subnet Access vs. App-Specific Access

The scope of access allowed by the VPN is broader than that of ZTNA because it was designed to extend the network. With VPN, users have broad subnet access, enabling devices, users, and services to connect and communicate across large, unrestricted network segments. 

While broad subnet access is efficient, it is not ideal for today’s business environments because of security concerns. With sophisticated cybercriminals using lateral movement, once they compromise a single VPN-connected endpoint in a subnet access environment, this connection can be used to scan the entire environment.

ZTNA provides more granular app-specific access. Instead of being “on the segment,” as in VPN, users are “on the app” in ZTNA environments. ZTNA shifts the approach to access from giving a user a network address, to providing them with a secure path to a specific application. This approach narrows access so that attackers have nowhere to go.

Point-in-Time Trust vs. Continuous Verification

VPNs rely on a point-in-time trust model in which users are authenticated at login. Once users have been authenticated, they are trusted for their entire session and allowed to access network resources. This approach assumes that all internal traffic is safe, overlooking the chance that a user session may have been hijacked by a cybercriminal. If the credentials used to log in have been stolen, VPN allows attackers to move laterally throughout a session.

Following the Zero Trust principles of “never trust; always verify,” ZTNA performs continuous verification. Every access attempt needs to be verified, even if it occurs after log-in, by an authorized user to prevent lateral movement by an attacker. ZTNA evaluates user identity, device posture, and context, including location and behavior, throughout a session. If a user’s risk level changes, access is immediately revoked or restricted.

Why Companies Need to Adopt ZTNA in 2026

While VPNs provide encryption for network traffic, the industry is moving away from them toward ZTNA because identity and context have become a security priority over the tunnel.

According to the Gartner Magic Quadrant for SASE Platforms, companies must create a convergence between networking and security. ZTNA provides this convergence. Gartner predicted that, by 2027, 80% of enterprises will have developed a strategy to unify web, cloud, and private application access using ZTNA to fight the increase in credential-based lateral attacks.

Moving from a VPN-centric model of network security to a Zero Trust Network Architecture doesn’t mean your company’s previous approach was wrong. By adopting ZTNA with its approach of assuming nothing and verifying everything, your organization is choosing to adapt your security strategy to defend against the risk of decentralized data and professionalized hacking.

ProActive Solutions can help your company modernize its approach to network security by transitioning from VPN to ZTNA. Using our leading Security Technology solutions, we will work with your organization to build a ZTNA that is updated to meet the security demands of 2026 and beyond.

Get started with designing and implementing a ZTNA. Request a network security consultation from ProActive Solutions.