Hacktivist is somebody who engages in hacktivism, which is the fusion of hacking and activism; a merger in which technically proficient hackers engage in electronic direct action in order to bring pressure on institutions engaged in unethical or criminal actions, particularly in relation to the Internet and computer technology. (From www.thehacktivist.com)
A well-known hacktivist all her life, Alison is now working for the Internet Security division of Microsoft.
An uneducated and highly emotionally charged adolescent or man-child passive aggressively lashing out at the world through the safety of their computer over poorly understood political issues, usually while in their underwear.
Billy doesn't understand why he has to pay his electric bill, so rather than spend his time looking for a higher paying job, the hacktivist vandalized his local utility's website.