Spammers are cashing in on the (modest) popularity of Google+ by sending out fake emails inviting users to try out Google+ Hangouts. The fake Google+ plug-in promises to make you look and sound your best with high quality audio and video, apparently an effort to fool G+ users into believing that the free Web conferencing feature can be juiced. Clicking the link won t install a Google+. but downloads an executable file instead.
Source: https://threatpost.com/malware-poses-phony-google-plug-012612/76145/