We have released ArtByte Core v0.16.1 which fixes the Bitcoin bug vulnerability, that also affected ArtByte.
If you are currently running ArtByte Core v0.13.1, you do not need to upgrade, as this version does not have the Bitcoin bug.
If you are running ArtByte Core v0.16.0, you need to upgrade ASAP.
You can download it by going to our main site:
http://artbyte.me , then click on "get started" and chose the v.0.16.1 in the OS you need.