a.targetingadvertiser.com ads
might occur when your computer is infected with malicious browser extensions
installed by Adware or potentially unwanted Software(PUPs) and the pop-up ads
from a.targetingadvertiser.com ads are caused by adware. The domain used by
this adware is only to promote the ads and not malicious or associated with the
malware. The ads displays by this adware might vary as sometimes it promotes
products from many shopping sites, and sometimes fake updates .This
a.targetingadvertiser.com ads related adware is basically bundled with
freeware. So you should have to pay attention to the License agreements and
installation screen when installing free software.