threat-intel
CISA Urges Water and Wastewater Systems Sector to Protect OT Against Activity Targeting PLCs
High
Summary
The CISA is warning the Water and Wastewater Systems sector about a significant increase in cyberattacks targeting Programmable Logic Controllers (PLCs). Threat actors are modifying passwords to lock out operators and disconnecting PLCs by changing their IP addresses, leading to boil water notices and manual operations. The agency urges immediate action to disconnect PLCs from the internet and implement robust remote access controls.
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