You aren't intercepting the signals per se, but your computer is using its unused CPU time to process the signals that have been downloaded from the
Dishes and then split up into little workloads spread among thousands of computers. Im not even sure if they are still doing SETI@Home?I dropped
Seti@home to do Fold@home myself since it seemed to help out in a much more critical area like cancer and alzheimers research.
Pie

