Hi MassimilianoAlf, Thank you for your suggestions. You say, "The right part of your face is too dark..." Let me explain. The subject of the course ise attacking and securing to the database systems. I am telling about both hacking and securing. So the philosophy is that, Every hacker must think like a security guard and every security guard must think like a hacker. So it is a Chinesee belief. "Yin Yang". In the video, in fact three types of person. First, hacker;Black shirt,black background Second, Security guard;White shirt,White background Third, Story teller;Black shirt,White background And They have their background music. I used one way light and one side of my face is dark. Linke yin yang 🙂 As i said, it is a strange promo. It has a story in it 🙂
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