Which type of attacker has actions that are considered noble by the attacker but could cause more harm than good?

The type of attacker described is often referred to as a "hacktivist." Hacktivists carry out cyberattacks driven by political or social motives, believing their actions promote a noble cause, such as freedom of information or social justice. However, their activities can inadvertently cause significant harm, including data breaches, collateral damage to innocent parties, or disruptions to critical services, ultimately undermining their intended objectives.