Be Alarmed, not Alert.
The Australian national security hotline received a number of calls about a black box on a fence with wires coming out of it. Obviously a bomb, according to the elderly callers. It turns out you can't even have a wireless access point in your front yard without getting hassled by the man.
The Register article
Thread on Whirlpool posted by the dude it happened to
The Register article
Thread on Whirlpool posted by the dude it happened to