All security issues have been dealt with together with exchanges over two months ago as you can read here:
I can understand your frustration with the exchanges and not having a one-fits-all solution for the cryptocurrencies that you mine. Though it is obvious that your last comments are FUD and are built on hardly any research, please investigate more before making such unsubstantial claims. There are lots of projects in development if you would simply check any of æternity’s news feeds (Twitter, Reddit, Medium, or simply the news & announcements category on this forum). If you have feedback based on facts, we can discuss it, but please try to stick to the forum community guidelines.