I would like to add a few signs that could let you know that its a fake.
First off, NEVER download any hack here before being 100% it is legit, look at the replies and see if other people can make it work.
You can also see their join date, most people who release hacks or plan to have at least 2-3 months active on the site. Also look at their post count and thanks. If its their first post to release a hack its most likely fake.
Hope I helped.