"Likejacking specifically refers to a victim clicking on something only to have some piece of content Liked, without their knowledge, in the background," ZDNet
explains. "This typically occurs with a fake video player window overlayed [sic] with a hidden iframe; actually clicking on it anywhere submits a Like, promoting the scam in question to your Facebook
friends." At risk, ZDNet suggests, is Facebook's ability to challenge YouTube as the Web's dominant video hub.
"Of course this number is skewed because most posts on Facebook aren't videos," ZDNet writes regarding the 15% figure, "but it still gives a general idea of what Palo Alto needs to do in order to compete with YouTube."