This is very sad. From the Art of Noh blog (link here), Dmitry Zagorodniy, owner of Ukrainian National Antivirus (Unasoft) was shot dead about two weeks ago.
The blog sources an article in a Ukrainian magazine (link here). The Art of Noh has an attempted translation using Babelfish. It is a bit difficult to read, but one understands that foul play is suspected in his death and a number of disturbing events are chronicled.
To the family of Dmitry, we offer our heartfelt condolences and sincere regrets on his passing.