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The End of VPNs — Part 1: Why Reachability is the New Risk
- VPNs are considered risky due to their design, which exposes vulnerabilities according to Zscaler CSO Deepen Desai.
- Legacy remote access infrastructure is failing modern enterprises, with high concerns about unpatched VPNs leading to ransomware attacks.
- VPNs grant broad network access once authenticated, making them a significant security flaw in today's hybrid and cloud-first environments.
- ThreatLabz tracked over 400 CVEs related to VPN vulnerabilities between 2020 and 2025, with attackers exploiting them faster than patches are deployed.
- The lack of segmentation and containment within VPNs has led to major outages and breaches, resulting in urgent patch cycles.
- The blueprint for VPN exploitation includes finding exposed endpoints, compromising devices, moving laterally, and exfiltrating data or deploying ransomware.
- Attackers are now using AI to automate reconnaissance, plan attacks, and generate exploits faster than traditional defense teams can patch, posing a significant threat.
- Defenders need to adopt Zero Trust architecture and simplify their infrastructure to combat automated threats effectively.
- VPN failures not only pose external threats but also burden IT, security, and end users with outages, performance issues, and internal resource drains.
- VPNs can act as backdoors for third-party risks and expose vulnerabilities during mergers and acquisitions, making them a significant security concern.
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