In this subtitle the following words have the meanings indicated. “Community sewerage system” has the meaning stated in § 9–501 of this title. “Community water system” has the meaning stated in § 9–401 of this title. “Cybersecurity” means processes or capabilities wherein systems, communications, and information are protected and defended against damage, unauthorized use or modification, and exploitation. “Emergency manager” has the meaning stated in § 14–101 of the Public Safety Article. “Operational technology” means programmable systems or devices that interact with the physical environment by detecting or causing a direct change through the monitoring or control of devices, processes, and events. “Operational technology” includes: Industrial control systems; Building management systems; Fire control systems; and Physical access control mechanisms. “Water and wastewater sector” means all providers, including private and public, of water supply or sewerage services. “Zero–trust” means a cybersecurity approach: Focused on cybersecurity resource protection; and Based on the premise that trust is never granted implicitly but must be continually evaluated.