This is one of the most intellectually awesome drama I have ever watched for quite a while. When I saw the synopsis of this drama, I knew I had to watch it because I myself is in the IT security industry. And, to say that I am glad that I have watched it is an understatement. Every episode right from the first kept you glued to the TV screen because of the suspense and the way the plot is being developed. I can personally attest to the authenticity of the technology and techniques shown and watching it actually makes me like my own job even more. Of course, a good plot and script would not have succeeded without a good cast. This is where the whole acting cast did a fantastic job, personally I am surprised by the acting of Uhm Ki Joon, he played the villain role superbly considering how well he also acted as the super good teacher in Dream High. Lee Yeon Hee is as beautiful as ever though I feel that she is simple too pretty and delicate to be a cop chasing criminals lol, nonetheless she did a great job as a rose among the thorns. The OST of this drama complement the entire show well especially at key moments which actually adds to the feeling of suspense and intrigue. All in all, I thoroughly enjoyed the entire journey in the virtual cyberworld of the show, now back to the real cyberworld where I worked in :)