Because of the 50gb free space, I already have a lot of non tech friends using it for all their highly sensitive / personal stuff. And probably for sharing stuff between work <> home; people in big (gov) companies.

Also, in the last week I heard a lot of people moving of others (dropbox/gdrive) simply because they are now expensive compared. And they were already hosting private/secure sensitive (unencrypted => at least mega is encrypted) info on those. Lot of technical minded people seem to forget that ease of use beats anything for non tech people; privacy, security (and even, morals, when downloading stuff they didn't pay for; mega and others are easier than amazon, steam, netflix etc) go out the door when something is easy to use. And preferably free.

Agreed, the point is that having an exploit is only useful to someone who really really really wants into that specific system. With a system that will have millions of users, someone's sure to be angry at someone over something that's up there.