Cybersecurity

The following posts are useful for general awareness of current threats, vulnerabilities, guidance, and other cyber-related news or updates. These resources have been curated by the WaterISAC analyst team as items of broad relevance and benefit that do not need supplemental analysis at this time.

Critical Infrastructure

As a follow up and in response to WaterISAC’s advisory yesterday on the incident at the Municipal Water Authority of Aliquippa, CISA just released an alert warning water and wastewater utilities of the exploitation of Unitronics PLCs.

According to a new blog post by Microsoft, a North Korean-based threat actor dubbed Diamond Sleet has been observed distributing a malicious variant of a legitimate application installer developed by CyberLink Corp. to target customers in a supply chain attack. For its part, the trojanized file, which is hosted on CyberLink’s update infrastructure, includes malicious code that is designed to download, decrypt, and load a second-stage payload.

The Cybersecurity and Infrastructure Security Agency (CISA) has published the following ICS vulnerability advisories, as well as alerts, updates, and bulletins:

ICS Vulnerability Advisories:

CISA Releases Four Industrial Control Systems Advisories

Products are used across multiple sectors, please check these latest advisories for specific equipment used across your ICS environments and address accordingly.