I bought this game really cheap, but free is the only fair price for it. It is really bad.
First of all it starts on my second display which is my TV, took a while to realize it.
Second, there is a bug where you can't read messages (gives some file not found error), apparently the dev knows about this since Jan or Feb or something and it still isn't fixed. There's a dude that posted some workaround with converting mp3 files to ogg and changing some text files around to make it work, this way you can actually read mission objectives.
The game it is kind of crap, it is not very intuitive what you need to do, in fact in the tutorial the AI hacked me down to 0 firewall and 0 integrity and I had no idea what would I need to do to counter it. Don't be mistaken by the name the game has nothing to do with actual hacking or IT skills, it's just a theme, so it's not about me not knowing what a computer is (I do, working since 15 years in IT).
I know now it's a rather old game and it's not a big financial loss to try it, but if I knew what I know now I wouldn't have paid even 1 euro for it. Angry birds is more fun and an actual game that works compared to this (I don't play angry birds, never undestood the fascination, it's a really stupid game).