dmoberhaus writes: An astronomer and astrophysicist have published a new paper to arXiv examining possible scenarios where an extraterrestrial message received on Earth is malicious. This ranges from unsubstantiated threats ('We'll supernova your sun!') to super advanced AI that promises the cure for cancer but takes over the world with microbots. The ideas are pretty far out there, but serve to underscore the inherent risk with SETI efforts. Nevertheless, the researchers argue that the benefits of establishing contact with ET far outweigh the risks .