Abstract
I During 2021, a facility responsible for treating water in Florida, USA, experienced a cyberattack
orchestrated by external malicious entities. These attackers sought to tamper with the levels of
certain chemicals in an attempt to compromise the integrity and safety of the water supply.
Recognizing the complexity of detecting abnormal operations in Industrial Control Systems (ICS),
we sought to leverage the benefits of finite-state machine technology to address this challenge.
To evaluate our approach, We performed a series of assessments utilizing the cybersecurity
testbed for dam control systems developed by TWISC@NCKU in Taiwan. Research results show
that improved detection of irregular operational behaviors, empowering maintenance staff to
swiftly pinpoint anomalies.
https://ror.org/01b8kcc49 
