Is SETI at risk of downloading a malicious virus from outer space?

Is SETI at risk of downloading a malicious virus from outer space?: "We take it for granted that the search for extraterrestrial intelligence (SETI) is a safe endeavor. Seriously, what could possibly go wrong with passively searching for interstellar radio signals? Unfortunately, the answer is quite a lot –- especially if the incoming signal contains something malicious, like a computer virus or Trojan horse. And according to the experts, this isn't just idle speculation – the threat is very real. So, just how concerned do we need to be?"