I am looking for a word (an adjective) that describes something that is likely to cause bad consequences if gone after/considered/executed. Basically one is likely to regret if they mess with it. Or, another way to put it, one has to realize all ins-and-outs before committing/choosing to go this way, otherwise they are likely to regret it.
I tend to think that the meaning of 'risky' is close to what I am looking for, but I don't think it hits the spot 100% because taking a risk implies relying on luck: if one is lucky enough everything will be all right, if not then, well, bad luck. But what I am asking about doesn't have anything to do with being lucky, it's rather being smart and understanding what you are doing.
So the idea is to come up with a right word that clearly says to the random people to keep out, so they don't hurt themselves.