Presence of PUP.SIViewer adware inside the system increases frequency of displaying ads on browsed web pages. The number of such windows increases in case of visiting shopping or commercial web domain. Most of ads are related with adware program and connected with pay per click service. Even those all have fake discount offers and money saving tricks. The benefit of cyber criminals is in the clicks which is made by users on those ads windows. It may take them to harmful location or do nothing but adding money to developers account. Hence, removal of PUP.SIViewer adware program is very important either with manual method or free scanner tool like SpyHunter.
