Summary: Hacktivists broke into the PBS website and exposed thousands of usernames and passwords as well as defaced the news site, resurrecting dead rapper Tupak Shakur.
Details: Imperva has dissected this breach when it happened.
Why Significant: Brought hacktivism to the media, hacking wasn’t just a “corporate” issue anymore. Anyone could be a target. After this event, hacktivism was no longer a temporary blip on the radar, it became something that had staying power. Anonymous was anything but.