no, as for me i didn't know.. friend of mine invited me there 1,5 year before and i invested there a little amount, something about 20$, and forgot about that, and one day before they scammed (june 25, 2016) i found 155$ in my wallet!! so i thought -it is amazing site! i must invest more there and i will get more!- so i did some resarch, i read a lot about hashocean, everyone wrote the best about this site and said that you can trust them! i didn't find any negative opinion about them in the internet!! so i invested there 100$ and the next day they scammed(((
Well, you made some profit anyway. 155-20-100=$35.
Everybody was saying that the site is amazing because it was paying and because they want referrals to earn comission.
But here on Bitcointalk many people said the risks about HashOcean. It`s the best forum to know more about everything related to Bitcoins and another crypto-currencies.