Definition[]
Likejacking is a Facebook-enabled clickjacking attack that tricks a user into clicking links that mark the clicked site as one of his/her Facebook "likes." After clicking "like", a link to the malicious page is posted to the user's profile in an attempt to dupe his friends and family to click on the link as well.
Overview[]
"Facebook has largely countered this attack by asking the user to confirm a 'Like' before it posts if the user is 'Liking' an untrustworthy domain."[1]