It is generally understood that if you are a relatively famous artist and you have a song or an album coming out anytime soon, it's probably going to get leaked. But yes, if someone steals your of content, it’s illegal. Well, first you delete posts like this that tells even more people where to look for leaks. Look for and pay for a take down. If a lot of posts are being spammed about the same thing, like ac ragnarok, they’re probably real too but you really shouldn’t ever trust a leak unless there’s actual video gameplay to back it.
He could have all the source code, which could lead to back doors and exploits of all sorts if uncorrected.
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