OT Auth
Strengthen OT systems by securing access, reducing cyber risks,
and meeting compliance — all without adding complexity.
OT Auth
As cyberattacks on Operational Technology (OT) systems intensify, industries across manufacturing, energy, and transportation face growing risks to critical assets and operational continuity. Legacy systems still rely on static credentials, shared accounts, and air-gapped networks — all of which are increasingly vulnerable. Yet, conventional IT security tools don’t work in OT environments. swIDch delivers OT authentication solutions that stop unauthorised access, credential abuse, and spoofing — without relying on network connectivity or disrupting operations.
Eliminate shared and static credentials
No more passwords, tokens, or shared logins that can be stolen or misused. swIDch issues one-time dynamic codes per user/device that can’t be reused or cloned — eliminating the risk of insider threats and external compromise.
Offline authentication for isolated systems
Many OT networks are air-gapped or operate in low-connectivity environments. swIDch’s OTAC technology generates authentication codes without network dependency, enabling secure access even in offline or remote sites.
Compliance-ready for industry standards
Our solutions help meet identity-based access control requirements under NIS2, IEC 62443, and other regulatory frameworks — reducing audit burdens and future-proofing your security investment.
Seamless deployment across OT ecosystems
swIDch’s authentication integrates with existing OT systems — PLCs, engineering workstations, gateways — without requiring network redesign or additional hardware. Easy to implement, powerful to scale.
Designed for engineering workstations and maintenance laptops, PLC OTAC authenticates personnel accessing PLCs with dynamic, one-time codes. It blocks unauthorised access and lateral movement from compromised user credentials — ensuring secure control at the source.
![[swIDch] OTAC TAG-2](https://www.swidch.com/hubfs/%5BswIDch%5D%20OTAC%20TAG-2.jpg)
This software gateway acts as a secure bridge between users and OT networks. Deployed at the network edge, it verifies the identity of remote and local users through OTAC before granting access — helping you maintain robust perimeter defence without disrupting existing architecture.
In partnership with Phoenix Contact, swIDch brings dynamic authentication to the PLCnext ecosystem. Our OTAC-based module authenticates users via one-time codes, enabling secure configuration and system operation with zero reliance on passwords or networks.