Nico Nico, meaning “smile” in Japanese, is one of the biggest video sharing sites in Japan, with more than 30 million free members and over 2 million paid subscribers.
Rumors surfaced earlier today, claiming that some users who were watching videos on Nico Nico saw a strange pop-up message, asking them to update Flash Player to the latest version.
Figure 1. The suspicious pop-up message, which says “This page cannot be displayed! Update to the latest version of Flash Player!”
The domain that the pop-up message appears from, downloads.[REMOVED].biz, does not look like it belongs to Adobe or Nico Nico.
If the user clicks “OK” on the pop-up message, they will be redirected a fake Flash Player download site, which mimics the appearance of the legitimate Adobe website.