I'm currently running a test with this tool on my test account. Convert has started since yesterday. Know more in 2,5 days but I'm sure it's fine because I can see it in the blockchain.
Here is the original post: https://steemit.com/utopian-io/@mwfiae/new-project-sbd-converter
Hope you are willing to support my witness group @blockbrothers with a witness vote.
You can also use CLI-wallet for those concerned about the security of their Active Key.
The command is convert_sbd username "1.000 SBD" true.
I put some conversions through when it dipped down to $0.95 today.
You can also check the sourcecode or trust @therealwolf about it. He does promote my tool sometimes and he is a well known witness and owner/maker of smartsteem :)
So probably the best sign of trust I can get :)
The biggest security concern is prob the RPC node in terms of your program, which is the same concern as with the CLI :)
Why would the rpc node be a concern regarding security?
The key never enters the node as far as I'm aware and all the encrypting/signing does happen on client side.
Please correct me of I misunderstood anything.