Date: December 1, 2023
This Alert is intended for IT professionals and managers of notified organizations.
An Alert is used to raise awareness of a recently identified cyber threat that may impact cyber information assets, and to provide additional detection and mitigation advice to recipients. The Canadian Centre for Cyber Security ("Cyber Centre") is also available to provide additional assistance regarding the content of this Alert to recipients as requested.
The Canadian Centre for Cyber Security (Cyber Centre) is aware of reported exploitation of Unitronics programmable logic controllers (PLCs) used in the water and wastewater systems sector. The Cyber Centre recommends organizations review the guidance published by the Cybersecurity and Infrastructure Security Agency (CISA) about this activity and follow the recommended mitigationsootnote 1.
The risk to industrial control systems accessible from the Internet is not limited to Unitronics devices or the water and wastewater systems sector. The Cyber Centre recommends that organizations using industrial control systems review and implement the security guidance in the Cyber Centre's "Security considerations for industrial control systems"otnote 2.
The Cyber Centre recommends organizations:
- Review and implement the guidance published by CISA on the activity targeting Unitronics programmable logic controllersFootnote 1.
- Review and implement the security mitigations in the Cyber Centre's "Security considerations for industrial control systems" guidanceFootnote 2.