Not a hack, just some dev humor.
From 2011: http://web.archive.org/web/20110808141434/http://www.javelin...?
Issue Tracker, date in 2011: https://github.com/phacility/javelin/issues/10
From 2011: http://web.archive.org/web/20110808141434/http://www.javelin...?
Issue Tracker, date in 2011: https://github.com/phacility/javelin/issues/10
EDIT: Only now noticed the Hacked message, I thought the intro in the blue rectangle was the hacker's message.