Our latest news and insights
The latest news and insights
Why Critical HSS Outages Like the One in South Korea Are Prevented by Our Design
Recently, South Korea’s largest mobile network provider experienced a nationwide service disruption that left over 13 million users without voice and data connectivity for several hours. The outage severely impacted not only consumer services, but also disrupted banking operations, emergency hotlines, and transportation systems. The root cause was traced back to a vulnerability in the operator's Home Subscriber Server (HSS) platform — a critical core network component responsible for user authentication and mobility management.
While the affected system did not involve any Summa Networks technology, this incident — widely covered by national and international media — highlights the immense risks tied to single points of failure and security breaches in the mobile core.
A Robust Architecture That Prevents Downtime
At Summa Networks, we want to reassure our customers and partners that such a scenario is not possible with our products. Our HSS and Unified Data Management (UDM) systems are designed with high-availability architecture, multi-node redundancy, and fault-isolation mechanisms that eliminate the risk of total service disruption.
In addition, we incorporate geo-redundancy and real-time monitoring, allowing uninterrupted service continuity even in the face of localized issues. For us, ensuring network integrity, data security, and service availability is non-negotiable.
Security Built Into Every Layer
The recent incident reportedly involved a source-code-level attack. At Summa Networks, we mitigate these risks from the ground up. Our development processes include Static Application Security Testing (SAST), and we conduct regular penetration tests to secure our software supply chain. We also leverage Software Composition Analysis (SCA) tools to identify vulnerabilities in third-party libraries and dependencies used in our projects, reinforcing our proactive approach to security.
We also secure our infrastructure using VPNs, firewalls, and Role-Based Access Control (RBAC) policies, ensuring that only authorized personnel can access sensitive environments. These practices make code injection attacks — like the one recently reported — virtually impossible in our systems.
Committed to International Standards
To further reinforce our commitment to security, we have successfully obtained ISO 27001 certification.
All directives required under the standard have been implemented, ensuring our processes are aligned with international best practices.
You’re Safe with Us
Incidents like the one recently reported in South Korea serve as a wake-up call for the telecom industry. They reaffirm the need to choose partners whose solutions are built for resilience and secure by design.
With Summa Networks, you can trust that your network is protected — and so are your subscribers.
If you’d like more information or wish to speak with our technical team, feel free to reach out at any time.
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