---
title: SSenStone Secures K-water with First OT Endpoint Authentication for Critical Infrastructure
description: SSenStone, a leading authentication security provider, announced that its OTAC (One-Time Authentication Code) technology is being implemented by Korea Water Resources Corporation (K-water) to strengthen security for water facility control systems.
---

[News & Information(eng) ](https://blog.ssenstone.com/en/newsinformation)

# [SSenStone Secures K-water with First OT Endpoint Authentication for Critical Infrastructure](https://blog.ssenstone.com/en/newsinformation/ssenstone-secures-k-water-with-first-ot-endpoint-authentication)

 Written by [SSenStone](https://blog.ssenstone.com/en/newsinformation/author/ssenstone) | Jan 15, 2026 9:38:55 AM

SSenStone, a leading authentication security provider, announced that its OTAC (One-Time Authentication Code) technology is being implemented by Korea Water Resources Corporation (K-water) to strengthen security for water facility control systems. This represents the first real-world application of IEC 62443-compliant Identification and Authentication Control in critical infrastructure.

The project delivers the OTAC Trusted Access Gateway (TAG), a dynamic one-time code authentication solution that protects PLCs, HMIs, RTUs, DCS, and SCADA endpoints without requiring legacy device replacement. By generating unique offline authentication codes via pre-registered media such as smartphones or display cards, TAG blocks unauthorized access at the source and creates secure audit logs for compliance.

Amid growing cyberattacks on water facilities worldwide — including recent incidents in Norway and Poland — this project demonstrates how proactive endpoint authentication can eliminate vulnerabilities in fixed-password systems and prevent unauthorized manipulation of critical infrastructure.

The initiative also aligns with national security guidelines in Korea and sets a reference model for global critical infrastructure operators. swIDch, SSenStone’s global headquarters in London, will play a key role in scaling this technology to international markets.

Chang-Hun Yoo, CEO of SSenStone and swIDch, said: “Recent attacks on water facilities in Europe remind us that OT endpoint security is no longer optional. This collaboration with K-water represents a significant step toward securing critical national infrastructure, and we are committed to bringing our trusted technology to safeguard essential systems worldwide.”

 

 

 

[View full post](https://blog.ssenstone.com/en/newsinformation/ssenstone-secures-k-water-with-first-ot-endpoint-authentication)

```json
{
  "@context" : "http://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "SSenStone"
  },
  "dateModified" : "2026-01-15T09:38:55.442Z",
  "datePublished" : "2026-01-15T09:38:55Z",
  "headline" : "SSenStone Secures K-water with First OT Endpoint Authentication for Critical Infrastructure",
  "image" : {
    "@type" : "ImageObject",
    "height" : 1024,
    "url" : "https://21004258.fs1.hubspotusercontent-na1.net/hubfs/21004258/%EC%84%BC%EC%8A%A4%ED%86%A4%20%EC%9D%B4%EB%AF%B8%EC%A7%80%20%EC%9E%90%EB%A3%8C1..jpg",
    "width" : 1024
  },
  "mainEntityOfPage" : "https://blog.ssenstone.com/en/newsinformation/ssenstone-secures-k-water-with-first-ot-endpoint-authentication",
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "height" : 60,
      "url" : "/hs/hsstatic/content_shared_assets/static-1.4092/img/default-amp-logo.png",
      "width" : 60
    },
    "name" : "News & Information"
  }
}
```