Traditional virtual private networks (VPNs) have long been used to give remote users access to corporate resources. For years, they were a practical way to extend the corporate network to employees working outside the office. But the way organizations work has changed.

Today, users access SaaS applications, private apps, cloud environments, GenAI tools, and sensitive data from anywhere. They use managed and unmanaged devices, connect from home networks and public Wi-Fi, and work with contractors, partners, and third parties who may never sit inside the corporate perimeter.

This shift has exposed the limits of legacy VPNs. VPNs were designed for a perimeter-based security model where access to the network often implied trust. Modern security requires a different approach: one that continuously verifies identity, assesses risk, limits access, protects data, and enforces policy where work actually happens.

What Is a VPN?

A VPN creates an encrypted tunnel between a user's device and a remote server. This tunnel allows users to transmit data over the internet more securely and access internal resources as if they were connected to the corporate network.

Businesses have traditionally used VPNs to let remote employees connect to private applications, file shares, internal systems, and other resources that are not publicly accessible. Consumer users also use VPNs to mask IP addresses, secure browsing on public networks, or bypass geographic restrictions.

Common VPN protocols include OpenVPN, IPSec, and L2TP. These protocols encapsulate traffic and send it through an encrypted connection, helping protect data in transit from interception.

But while VPNs can encrypt traffic between a device and a VPN gateway, they do not solve the broader challenges of modern enterprise access. VPNs were built for a time when applications lived mostly inside the data center and employees worked mostly from trusted corporate environments. That is no longer the reality.

As organizations adopt cloud services, hybrid work, SaaS applications, and distributed workforces, traditional VPNs often create security, performance, and operational gaps.

Why Traditional VPNs Fall Short

1. VPNs Grant Too Much Network Access

Legacy VPNs provide broad network access upon authentication, increasing risk. If credentials are compromised, attackers can move laterally to find sensitive systems, escalate privileges, or exfiltrate data.

Modern security requires least-privilege access, ensuring users only reach specific resources based on identity, device posture, and risk signals — levels of granularity VPNs cannot enforce.

2. VPNs Depend Too Heavily on One-Time Authentication

VPNs typically rely on one-time authentication. This fails to account for stolen credentials or devices compromised mid-session. Zero Trust requires continuous verification to detect changing risk signals like impossible travel or malware infection throughout the session.

3. VPNs Can Enable Lateral Movement

By exposing the internal network, VPNs facilitate scanning and lateral movement by adversaries. A modern strategy hides private applications, limiting access at the application level to reduce the attack surface.

4. VPNs Provide Limited Visibility into User Activity

VPNs lack visibility into specific user actions within browser-based and SaaS applications. Security teams need detailed telemetry on data movement and risky behavior to detect incidents and enforce policy effectively.

5. VPNs Struggle with Unmanaged and Third-Party Devices

Granting network-level access to unmanaged contractor or partner devices creates significant risk. Organizations need session-level controls to enforce security policies without requiring full device management.

6. VPNs Can Hurt Performance and User Experience

Centralized VPN gateways create bottlenecks and latency for cloud-first workforces. Moving away from legacy paths improves application reliability and user experience.

7. VPNs Do Not Protect the Full Access Journey

VPNs focus on connectivity rather than holistic protection. A modern approach evaluates identity, device health, and session safety to inform access decisions in real-time.

A modern approach to secure access should answer questions like:

• Is the user who they claim to be?
• Is the device healthy and compliant?
• Is the browser session safe?
• Is the user accessing only the applications they need?
• Is sensitive data being downloaded, copied, pasted, uploaded, or shared?
• Has the user's behavior changed during the session?
• Should access be allowed, restricted, monitored, or blocked?

What Should Replace VPN?

There is no single universal VPN replacement for every organization. The right approach depends on the applications, users, devices, risk tolerance, compliance requirements, and existing security architecture.

However, the strongest VPN replacement strategies are built around Zero Trust principles. They move away from broad network access and toward continuous, risk-based enforcement across identity, endpoint, browser, application, and data.

Common VPN alternatives include:

1. Browser-native secure access
2. Zero Trust Network Access
3. Secure Access Service Edge
4. Software-Defined WAN
5. Software-Defined Perimeter
6. Identity and Access Management
7. Unified Endpoint Management
8. Secure Web Gateway

VPN replacement involves building a Zero Trust architecture that integrates these technologies to reduce risk and improve the user journey.

1. Browser-Native Secure Access

Browser-native security manages sessions directly within the browser, the modern workspace. As users access SaaS, private apps, and GenAI, the browser becomes a vital security control point. Unlike VPNs, this clientless approach enforces policy at the session level via four key areas:

Runtime Protection

Advanced solutions operate within the JavaScript engine to neutralize zero-day exploits, phishing, and credential theft before endpoint compromise. By intervening during processing, it stops threats earlier than proxy-based methods.

Secure Access

This enables secure, VPN-less access to internal and SaaS resources. It is ideal for contractors and BYOD users, ensuring applications are only reachable through protected sessions via identity provider integration.

In-Browser Data Loss Prevention

In-session controls govern data interaction, including copy/paste, file transfers, and masking. This allows safe GenAI use while preventing sensitive data exposure in public prompts.

Extension Governance

Security teams can gain visibility and control over the risky extension layer, permitting or blocking them without changing user browsers.

2. Zero Trust Network Access (ZTNA)

ZTNA replaces broad network access with application-specific connectivity for verified users based on identity, device health, and policy.

Operating on the principle of least privilege, ZTNA grants access only to authorized resources while hiding applications from unauthorized users to minimize the attack surface.

As a VPN alternative, ZTNA limits lateral movement, increases visibility, and supports hybrid work.

Integrated platforms combining ZTNA with browser-native security further simplify architecture by enforcing both access and in-session protections.

3. Secure Access Service Edge (SASE)

SASE converges network and security functions (ZTNA, Secure Web Gateway, cloud access security broker, Firewall as a Service, software-defined WAN) into a cloud architecture. It replaces traditional data center-centric routing with optimized, secure access for all users, regardless of location. This simplifies infrastructure and ensures consistent policy enforcement across distributed environments.

4. Software-Defined WAN (SD-WAN)

SD-WAN uses software to optimize traffic across connections like broadband, LTE, and MPLS. Unlike traditional VPNs using centralized gateways, it dynamically selects paths based on application needs. While enhancing performance for branches and cloud apps, it is not a standalone VPN replacement as it focuses on connectivity rather than security.

5. Software-Defined Perimeter (SDP)

SDP hides services from unauthorized users, requiring authentication before access. By keeping resources invisible until verified, it reduces the attack surface and supports microsegmentation through encrypted connections. This model aligns with Zero Trust by enforcing need-to-know access.

6. Identity and Access Management

Identity and access management (IAM) centralizes authentication and authorization for users, apps, and services via tools like single sign-on (SSO), multifactor authentication (MFA), and adaptive policies. While IAM is a foundational Zero Trust signal, it requires supplementation from device posture, browser visibility, and data protection to be effective. Because attackers frequently target credentials through phishing and hijacking, organizations must transition from simple login authentication to continuous, identity-aware monitoring.

7. Unified Endpoint Management

Unified endpoint management (UEM) secures and manages laptops, desktops, and mobile devices by enforcing compliance, pushing updates, and integrating with access policies. While UEM improves security for managed endpoints, it does not address access risks for unmanaged or third-party devices where software installation is not feasible.

8. Secure Web Gateway

A Secure Web Gateway (SWG) defends against web threats and enforces internet access policies through URL filtering, malware protection, and traffic inspection.

Cloud SWGs provide consistent protection for distributed users against phishing and malicious sites.

As they focus on web traffic, SWGs often require integration with ZTNA, browser controls, and endpoint security to fully replace VPNs.

VPN Replacement Requires Continuous, Risk-Based Access

Replacing VPN should not mean replacing one access tunnel with another. It should mean modernizing how access decisions are made.

Legacy VPNs assume that once a user connects, they can be trusted to access parts of the network. Modern security assumes the opposite. Every access request should be verified. Every session should be evaluated. Every action involving sensitive data should be governed by risk.

A modern VPN replacement strategy should be built around these principles:

Deliver Runtime Protection Where Threats Begin

Browser-based attacks — including zero-day exploits, phishing, adversary-in-the-middle attacks, and session hijacking — often succeed before endpoint tools have a chance to respond. Runtime protection that operates at the JavaScript engine level can stop these threats earlier in the attack chain, before they reach the endpoint or result in credential theft.

Enforce Secure Access Without Broad Network Trust

Users should only access the applications and resources they need. Broad network access should be replaced with application-level access that is enforced based on identity, device posture, and session context. This applies equally to employees, contractors, and third parties on managed and unmanaged devices.

Apply In-Browser Data Loss Prevention

Security teams need controls that govern what users can do with sensitive data inside the browser. That includes downloads, uploads, copy and paste, dynamic data masking, and the use of sensitive data in SaaS and GenAI tools. In-browser DLP enforces these controls at the point of interaction, not after data has already left the organization.

Govern the Extension Layer

Browser extensions are a frequently overlooked risk surface. Extension governance gives security teams the ability to allow, block, or restrict extensions based on policy, reducing the risk of data exfiltration, credential interception, and policy bypass through the browser extension layer.

Integrate Access Decisions with the Broader Security Platform

Access decisions should be informed by signals from across the security environment, including endpoint health, identity risk, and behavioral context. When browser security, secure access, and threat detection share a common data layer, security teams can detect and respond to threats faster and with greater confidence.

Respond in Real Time

When risk changes, access should change with it. Organizations need the ability to allow, block, restrict, isolate, or monitor sessions based on current risk signals, not static policies set at login.

Considerations for Choosing a VPN Alternative

When evaluating VPN alternatives, organizations should consider both security and operational requirements. The best approach depends on the applications being accessed, the types of users, the devices involved, and the level of risk the organization needs to manage.

Key considerations include:

• Security Model: Does the solution support Zero Trust principles? Can it enforce least privilege, reduce lateral movement, and continuously evaluate risk? Does it provide runtime protection against browser-based threats, or does it only act at the network layer?
• Identity Integration: Can the solution integrate with existing identity providers, MFA, SSO, and identity threat detection capabilities?
• Device Coverage: Can it support managed devices, unmanaged devices, contractors, partners, and bring-your-own-device users without creating unnecessary risk or requiring device enrollment?
• Browser and SaaS Visibility: Can the solution provide visibility and control over browser-based activity, SaaS usage, and sensitive data movement? Does it work across the browsers your organization already uses?
• Data Protection: Can it prevent risky actions such as unauthorized downloads, uploads, copy and paste, and exposure of sensitive data to unmanaged environments or GenAI tools? Are those controls enforced at the session level, inside the browser?
• Application Coverage: Does the solution support private applications, SaaS applications, cloud resources, and browser-based workflows?
• Scalability and Performance: Can it scale for distributed workforces without routing all traffic through centralized VPN infrastructure?
• User Experience: Does it reduce friction for users, or does it force them into complex workflows that hurt productivity? Does it require users to change browsers or install heavy clients?
• Deployment Complexity: How difficult will it be to migrate from legacy VPN infrastructure? Can the organization phase the deployment by user group, application, or use case? How quickly can it be deployed and deliver measurable security improvement?
• Platform Integration: Does the solution share telemetry and risk signals with the rest of the security stack? Can access decisions be informed by endpoint health, identity risk, and behavioral context from a unified platform?
• Operational Visibility: Does the solution provide enough telemetry for investigation, monitoring, compliance, and incident response?

VPN Replacement Is a Security Modernization Opportunity

VPNs still have a place in some environments, especially for specific legacy use cases. But for many organizations, relying on VPN as the primary remote access model creates unnecessary risk.

Modern enterprises need secure access that is identity-aware, device-aware, browser-aware, data-aware, and risk-based. They need to protect users and data without granting broad network access. They need to support hybrid work, cloud applications, unmanaged devices, contractors, and third-party access without increasing the attack surface.

VPN replacement is not just about improving connectivity. It is about modernizing security.

By adopting a Zero Trust approach and applying controls at the browser session level — through runtime protection, secure access, in-browser DLP, and extension governance — organizations can reduce reliance on legacy VPNs, improve visibility, enforce least privilege, and protect sensitive data where work happens.

Modernizing VPN Access with CrowdStrike Falcon Seraphic Enterprise Browser

CrowdStrike Falcon® Seraphic® Enterprise Browser helps organizations move beyond legacy VPN models by applying Zero Trust controls where users work: inside the browser. Falcon Seraphic Enterprise Browser is built around four core capabilities:

• Runtime Protection: Uses patented Moving Target Defense in the JavaScript engine to neutralize exploits, phishing, and hijacking before they reach the endpoint.
• Secure Access: Provides clientless access to SaaS and internal apps without VPN or VDI, facilitating secure connections for contractors and BYOD users through identity integration.
• In-Browser DLP: Enforces session-level data controls like masking, watermarking, and GenAI protections to prevent exposure of sensitive information.
• Extension Governance: Offers visibility and policy enforcement for browser extensions across all devices.

As part of the CrowdStrike Falcon® platform, browser telemetry integrates with endpoint and identity signals for risk-based access decisions. The solution supports existing browsers like Chrome, Safari, Firefox, Edge, and emerging agentic browsers, without user disruption or migration. Falcon Seraphic Enterprise Browser provides a browser-native path to secure modern work, reducing risk across the entire workforce.