The development of cyber capabilities is strategic for any governments, computer systems and Internet of Things even more at risk. China, Israel, Iran, and Russia all of whom have robust offensive capabilities for years have become efficient and well manage espionage machines likely equal to that of the United States. The last couple of years has been earmarked with attacks on power plants, distribution systems, and even water treatment facilities. Simple jamming techniques have been used to disable key fobs, popular in todays new fobs.”]
Source: https://securityaffairs.co/wordpress/50229/cyber-warfare-2/information-warfare-cyber-offense.html