PUP.Best Cleaner is a virus name shown in the threats result after scanning with antivirus software. It technically is a potentially unwanted program which usually sneaks in computers to gain advertising profit. PUP.Best Cleaner likes to perform fake update or security alert messages, such as, flash player, Adobe Reader etc. It pretends to be so real that some people are tricked to click those fake pup-ups. Thus, the PUP.Best Cleaner goes into computers, and then destroys host files and drops registry entries which disturbing formal users experience. For example:
