Its one possible way i think is to invest in mining.. but before investing u should know about scam and real miners.. go through a deep investigation find every even and odd of it..then invest a very little for testing and when it fullfills your task then u can invest the major.
If you want to avoid a scam is better to buy mining equipment and then you can do mining in your own house and you make money at home? surely you will avoid scam right?