Luno..


Sure.. there literally is not a single more trustworthy exchange than some new random unreliable and unknown exchange which got the domain 1.5 months ago.
And not giving out any private informatics about the company or the owner of the domain also makes it really trustworthy. 

@OP
There are quite a few reliable exchanges. Depending on where you are from, you can have quite big choice.
But.. don't touch luno. Don't touch any new exchange at all. Stay with the most known and reputable ones.