Securing Cyber Resilience in Water and Wastewater Systems

Cyber Risks in Water
The water sector—covering drinking water supply and wastewater treatment—is a critical part of national infrastructure. Cyberattacks on water systems can lead to disruptions in water supply, contamination risks, environmental hazards, and financial losses. As water facilities become more digitised, the risk of cyber threats targeting Industrial Control Systems (ICS), SCADA networks, and remote access points continues to grow.
Regulatory Pressure: Strengthening Security Standards
Governments and industry bodies worldwide have introduced stricter cybersecurity regulations, such as NIS2, NERC CIP, IEC 62443, and the Cyber Resilience Act (CRA), requiring strong authentication, access control, and resilience against cyber threats. Water utilities must comply with these standards to prevent attacks, avoid legal penalties, and ensure uninterrupted operations.
Notable Attacks on the Water Industry

2021: Oldsmar Water Treatment Cyberattack
Hackers gained remote access to a Florida water treatment plant and attempted to alter the chemical levels in the water supply, potentially endangering thousands of residents. Fortunately, the attack was detected in time, preventing serious consequences.

2020: Israel Water Utility Cyberattack
A cyberattack targeted multiple wastewater treatment facilities in Israel, aiming to disrupt operations and damage water infrastructure. This attack highlighted the growing risks of cyber warfare on essential services.

2018: UK Water Company Hit by Cyberattack
A major UK water supplier suffered a cyberattack that compromised its operational technology systems. While water supply was not affected, the attack revealed serious vulnerabilities in remote access security and industrial control networks.
Benefits of OT Auth Solutions
To comply with regulations and protect against cyber threats, water utilities must implement strong authentication and access control measures for their operational environments. swIDch’s OT authentication solutions—PLC OTAC and OTAC Trusted Access Gateway (TAG)—provide a secure, scalable, and network-independent approach to safeguarding critical water infrastructure.
Why OT Authentication is Essential for the Water Industry

Regulatory Compliance

Security for Remote & Unattended Sites
Many water treatment plants, pumping stations, and reservoirs operate in remote locations. PLC OTAC generates dynamic authentication codes that do not require a network connection, preventing unauthorised access even in air-gapped environments.

Secure Remote Access for Critical Operations

Protection Against OT Cyber Threats
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How OT Auth solutions work
Traditional authentication methods in the water industry rely on passwords, network-based authentication, or VPNs, which are vulnerable to cyberattacks such as credential theft, phishing, and replay attacks. swIDch’s OT authentication solutions eliminate these risks by generating dynamic, unidirectional authentication codes that work even in offline environments.
How It Enhances Security in Drinking & Wastewater Management:
🔹 Prevents unauthorised access to SCADA, ICS, and remote monitoring systems—even in air-gapped environments.
🔹 Eliminates reliance on network connectivity, reducing exposure to cyber threats such as man-in-the-middle attacks.
🔹 Requires no additional hardware, making it a cost-effective and easily deployable solution.
By adopting swIDch’s OT authentication solutions, water utilities can enhance cybersecurity resilience, comply with industry regulations, and prevent operational disruptions caused by cyber threats.
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Water Security FAQs
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Water treatment plants and pipelines are critical infrastructure vulnerable to cyber threats. Strong authentication helps prevent unauthorised access and tampering.
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Yes, they integrate seamlessly with SCADA environments, ensuring secure authentication without disrupting operations.
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By eliminating the risks of credential theft and unauthorised access, it strengthens the cybersecurity posture of water utilities.
Award Highlights
