: computer hacking (as by infiltration and disruption of a network or website) done to further the goals of political or social activism
Some even speculate that the recent break-in to Microsoft's source code—a serious breach of security—was not industrial espionage but hacktivism.The San Francisco Chronicle
… instruments such as information warfare, cultural manipulation and social media hacktivism being used to achieve foreign policy goals without the use of direct force. Dominic Nicholls