← Back to Feed
[Security Blog] Internet-edge Devices Remain Targets for Hackers: Patching Alone Cannot Stop Credential Theft or Persistent Access
September 14, 2026 · HKCERT · Severity: CRITICAL
Internet-edge devices including VPN concentrators, firewalls, and routers remain prime targets for attackers seeking to establish persistent access to organizational networks. While patching vulnerabilities is essential, organizations must recognize that patching alone cannot prevent credential theft or stop attackers who have already established footholds. A comprehensive security strategy must include multi-factor authentication, network segmentation, continuous monitoring, and incident response readiness to defend against sophisticated attacks targeting edge infrastructure.
Key Takeaways
- Internet-edge devices such as VPN concentrators and firewalls remain primary targets for attackers seeking persistent network access beyond initial compromise.
- Patching vulnerabilities alone is insufficient protection, as credential theft and already-established footholds require layered defense strategies.
- Organizations must implement multi-factor authentication, network segmentation, and continuous monitoring alongside patch management to secure edge infrastructure.