On December 8, 2004 Webroot, an award winning anti-spyware solution provider, released a press release identifying the ten most significant emerging spyware and adware threats. Most of these you probably haven’t heard of and a few may surprise you.It is estimated that 9 out of 10 computers are infected with spyware, also known as, adware, scumware, malware and many others.Here’s the top 10.• PurtyScan – popup ads that trick users into installing by claiming to find and delete pornographic image.