Perhaps a more important question is not about the risks of transmitting, but the dangers in receiving. Many in the SETI community have shown commitment to the belief that a technologically advanced civilization will be altruistic, despite the lack of evidence supporting that assumption. Therefore it is assumed there are no significant risks with listening quietly.
You've got to wonder what would motivate creatures from other worlds to suffer a journey of hundreds of trillions of miles to visit our planet? Why bother? I've been asked this question at least a half-dozen times by Hollywood writers, and the best answer I can muster is "I don't know."
Extraterrestrial life may be showing up in some obvious places. No, this is not about hairless aliens that have come to Earth in saucer-shaped craft, but less sophisticated life just next door.
It would be imprudent to ignore Stephen Hawking's words of caution. However, I believe we have little to fear. In all likelihood, the aspirations, longings, griefs, joys, anxieties, fears, failures, and foibles of the aliens from space are much like our own.
Following a debate centered on warding off a space alien invasion, how the government can expand Walmart's business and a potential international plot to destroy lakefront real estate, the Missouri House of Representatives passed a bill banning the United Nation's sustainability plan Monday afternoon.