Risky Cyber System

Risky cyber systems in Malaysian Cities.
     Services in city halls such as Dewan Bandaraya Kuala Lumpur are computerized. Are these internet systems safe from hackers?
     Since 7.5.2019, Baltimore City, US, has been attacked by Ransomware, costing over US$18 million damage. This has affected many services such as payment of bills, hospitals, factories and airports. The hacker demands over US$75,000 ransom for each computer paralyzed.