Killing the VPN: How Enterprises Are Re-Architecting Remote Access With Zero Trust

For over two decades, virtual private networks (VPNs) were the default tool for remote access. Employees would authenticate into a secure tunnel and connect back into corporate resources, bypassing the public internet. But what was once a revolutionary safeguard has now become a liability.

As workloads shift to cloud, SaaS, and hybrid models, VPNs expose enterprises to new risks. A single compromised VPN credential can grant attackers lateral movement across the network. In fact, a 2023 IBM study found that over 40% of breaches in hybrid environments began with compromised remote access tools.

“VPNs are built on the assumption of trust once you’re inside,” said Michael Tsai, CTO at CypherEdge Security. “Zero Trust flips that model—no session, device, or user should be implicitly trusted, no matter where they connect from.”

Zero Trust Network Access (ZTNA) Takes Center Stage

Replacing VPNs doesn’t mean removing secure remote access. Instead, enterprises are adopting Zero Trust Network Access (ZTNA), which enforces per-session, per-application access rather than wide-open tunnels into the network.

ZTNA is based on four core principles:

• Verify explicitly: Every access attempt is authenticated in real time.
• Limit scope: Users connect only to specific apps or services, not the whole network.
• Context-aware access: Policies consider device health, geolocation, and behavioral signals.
• Continuous monitoring: Trust isn’t permanent—each action is reassessed.

The result: even if an attacker steals credentials, they can’t pivot laterally because the “flat” network exposure of VPNs is eliminated.

From “Castle-and-Moat” to Micro-Perimeters

Traditional VPNs operate like a drawbridge: once lowered, anyone inside the castle has free rein. In Zero Trust, each application is its own micro-perimeter. Users never see the network itself—they’re granted granular, segmented access that reduces blast radius.

A large financial institution in Singapore recently moved 20,000 employees from VPNs to ZTNA. The company reported a 70% reduction in unauthorized access attempts within six months and improved employee experience since users no longer had to route through overloaded VPN gateways.

The Hybrid Workforce Catalyst

The rise of hybrid work has made the VPN problem even worse. Remote employees often log in from unsecured home networks or personal devices. VPNs provide little visibility into the state of those endpoints.

“ZTNA checks whether your device is patched, whether your OS is up to date, even whether your antivirus is running before granting access,” explained Tsai. “It’s dynamic, unlike the binary trust of VPNs.”

Implementation Challenges

Transitioning away from VPNs isn’t without hurdles. Enterprises face:

• Legacy application dependencies: Some older apps only function within VPN tunnels.
• User experience concerns: Employees are used to VPN simplicity; ZTNA requires change management.
• Integration complexity: ZTNA must work across multi-cloud and on-premises ecosystems.

Experts advise a phased rollout—starting with cloud-native apps, then extending to legacy systems via secure brokers.

Looking Ahead: VPN-Free Enterprises

A Gartner forecast predicts that by 2025, 70% of new remote access deployments will be based on ZTNA instead of VPNs. The shift is inevitable, not optional.

“VPNs won’t disappear overnight,” Tsai noted. “But the organizations still relying on them exclusively are exposing themselves to outdated risks. Zero Trust access is the future—VPNs are the past.”

The Bottom Line

The death of the VPN is less about technology and more about philosophy. The network perimeter has dissolved, hybrid work is permanent, and attackers have adapted faster than defenders.

Enterprises that cling to VPNs risk repeating the same mistakes of the perimeter era. Those that embrace Zero Trust Network Access are not just modernizing security—they’re redefining what secure connectivity means in a borderless world.