Twitter has introduced a new warning label for tweets containing
content “obtained through hacking.” News stories that are detected as based on
hacks and leaked documents show this new label. However, users have already figured
an easy way to hack a URL together and make it appear on any tweet.
For instance, if you share the URL of a story with the new label,
it will generate the warning. Unfortunately, you can easily trick Twitter into flagging
tweets with this new warning by using a specially crafted link to a genuine URL
along with the flagged one.