Aqua Teen Hunger Force Banner on Building 10
Referencing the "Aqua Teen Hunger Force" bomb scare that resulted in the partial shutdown of Boston when authorities discovered signs with LEDs on them attached to various parts of the city, hackers dropped a banner over the front of Building 10 reading "This is a bomb [diagram of bomb]. This is not a bomb [diagram of character from the ATHF signs]." The banner was dropped during Campus Preview Weekend 2007 and removed early the next morning.
Paper Air Planes in Lobby 10
Several large paper airplanes appeared in Lobby 10 during CPW 2007, designed to look as if they had been folded from Athena header pages.
Stoplight at MIT Medical
During Campus Preview Weekend 2007, hackers turned the three round windows of MIT Medical into a stoplight. They could be controlled remotely via a large button installed on a nearby lamp-post, so that passerby could play their own games of "red light, green light. The red, yellow, and green lights respectively read "HACK," "PUNT," and "TOOL".
Don't Tell Your Dad
Hackers dropped a banner off the front of MIT's Lobby 7 during Campus Preview Weekend 2007. The banner read "Don't Tell Your Dad." Perhaps it is a reference to the fact that some prefrosh (admitted but still prospective students) are away from home for the first time.
Bridge Closed to Appease Godzilla
When a movie studio arranged to shut down the Massachusetts Avenue / Harvard Bridge for an entire Sunday, signs popped up around MIT redirecting traffic to detour routes. Some of those signs were electronic... and one of them got hacked. The sign reads, "Mass Ave Bridge Closed | Sunday 04/22/07 | To Appease Godzilla."