"Tracking software found!" is a fake warning from the rogue anti-virus software called Vista Guardian, but it may show up when your computer is infected with other rogue software too. It’s one of the many fake notifications displayed by bogus software. The fake notification claims:
"Tracking software found!
Your PC activity is being monitored. Possible spyware infection. Your data security may be compromised. Sensitive data can be stolen. Prevent damage now by completing a security scan."
If you see this fake warning then your computer is infected either with Vista Guardian virus or Trojan virus that promotes fake software. Read here how to remove Vista Guardian and related malicious software from your computer for free using legitimate and reliable anti-spyware software.