It appears that the Bing search site, that is Microsoft’s search site, is adding adverts that lead to the potential download of unwanted programs that even spoof Google.
Something I frequently find on people’s PCs are Add-ons to their Internet Browsers that either lead to shopping sites or simply unwanted search results. The other common thing that people often unwittingly download a programs that claim to fond and deal with errors in your PC. They often report hundreds if not thousands of error and then offer to correct the errors for a price. The errors are in most part complete fiction.
One such program that the Bing adverts are reported to lead to is “One System Care”.
If you would like to read more look at this Expert Reviews report