A lot of hackers are around and missing with people's hard efforts and money.
Few days ago my Account on C-cex ecchange was hacked and my LTC there was stolen, in the time I realised that it's better to sell those LTC and power it up on Stemit I found everything is gone.
And the exchange did not give back anything yet to me and still waiting hopefully I could get just some of it back.
This was the first time It happened to me, and was a very hard feeling honestly. However, I believe Steemit is more secured that lots of platforms around but always bad things could happen.