when a hacker uses your facebook photos to tag your friends in a scam photo and captions it with a malicious link
You look in your Facebook notifications and you see you were tagged in your friend Sarah's album "OG Friends"
and you are tagged onto a picture of spaghetti and the caption is "Claim your free dinners from olive garden NOW! go to bit.ly/asdkjhg"
and your friend says "dude your friend Sarah got photojacked!"