---
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.
image: https://blog.ssenstone.com/hubfs/%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
---
Jan 15, 2026 6:38:55 PM
# SSenStone Secures K-water with First OT Endpoint Authentication for Critical Infrastructure
 [ SSenStone ](https://blog.ssenstone.com/en/newsinformation/author/ssenstone)
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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.”
[OTAC](https://blog.ssenstone.com/en/newsinformation/tag/otac), [PLC](https://blog.ssenstone.com/en/newsinformation/tag/plc), [OT](https://blog.ssenstone.com/en/newsinformation/tag/ot), [SSenStone](https://blog.ssenstone.com/en/newsinformation/tag/ssenstone), [OTsecurity](https://blog.ssenstone.com/en/newsinformation/tag/otsecurity)
## Related posts
[ ](https://blog.ssenstone.com/en/newsinformation/34)
[OTAC](https://blog.ssenstone.com/en/newsinformation/tag/otac), [M2M](https://blog.ssenstone.com/en/newsinformation/tag/m2m), [IAM](https://blog.ssenstone.com/en/newsinformation/tag/iam), [Press Release](https://blog.ssenstone.com/en/newsinformation/tag/press-release), [PLC](https://blog.ssenstone.com/en/newsinformation/tag/plc)
## [SSenStone cooperates with LS Electric for localization of PLC with next-generation authentication technology](https://blog.ssenstone.com/en/newsinformation/34)
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Feb 27, 2023 1:16:00 AM
SSenStone announced that the company has successfully completed a proof-of-concept (PoC) with LS...
[ Read more ](https://blog.ssenstone.com/en/newsinformation/34)
[.jpg?height=200&name=img_plcotac_app%20(eng).jpg) ](https://blog.ssenstone.com/en/newsinformation/38)
[OTAC](https://blog.ssenstone.com/en/newsinformation/tag/otac), [PLC](https://blog.ssenstone.com/en/newsinformation/tag/plc)
## [SSenStone Partners with Phoenix Contact to Unveil Modular User Authentication on PLCnext Store](https://blog.ssenstone.com/en/newsinformation/38)
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May 2, 2024 5:54:44 PM
SSenStone and Phoenix Contact Collaborate to Fortify PLC Security in the Face of Growing Threats...
[ Read more ](https://blog.ssenstone.com/en/newsinformation/38)
[ ](https://blog.ssenstone.com/en/newsinformation/35)
[OTAC](https://blog.ssenstone.com/en/newsinformation/tag/otac), [Press Release](https://blog.ssenstone.com/en/newsinformation/tag/press-release)
## [SSenStone acquires NET certification for 'individual IoT device authentication and transmission data security technology'](https://blog.ssenstone.com/en/newsinformation/35)
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Jul 11, 2023 11:10:33 AM
Seoul, December 21, 2022 - SSenStone, a leader in next-generation authentication security, has...
[ Read more ](https://blog.ssenstone.com/en/newsinformation/35)
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