The family of a Scotch College student behind a get-rich-quick scheme had faith in his entrepreneurial skills and high hopes for his future.

"I am so very proud to call him my brother because he is so talented and already a success at 17 (his success started at 14/15)," his sister wrote online.

Alexander Beniac-Brooks. Credit:Facebook.

"One day he will be a buzzing entrepreneur (he already is) and will have the world falling at his feet. He is amazing!

"He has already made a name for himself around town...I believe Alexander is all about making change [not only] within his own, but others' lives."