The average Internet user has difficulty distinguishing viruses from spyware. The differences are indeed subtle. Both are malicious software (malware): uninvited, intrusive, and potentially destructive. Both have the capacity to capture and destroy information, ruin performance, and disrupt business. Viruses and spyware programs are delivered via web visits and downloads, as well as email attachments. Both can attack systems through many vectors. Perhaps they both fall into the category of blended threats? But what the heck is that?