Cyber warfare refers to

Cyber warfare covers offensive and defensive actions carried out through digital systems. Tactics include malware deployment espionage data theft service disruption and attacks on power grids and communication lines. States and non state actors both operate in this domain. Defenders harden networks train staff and run incident response drills. The umbrella term therefore includes spyware use infrastructure targeting and wider destructive applications. Select all of these when an item lists overlapping cyber actions under one heading.