Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Read it with admire...

I am a Linux lecturer.And I like to read those books about Hacking and Security.Most of the books are not that easy to read.Because writers assume that their readersmust have a strong background on those issues.Sometimes they just throw you the answer without explaination.But this book really makes a difference.It gives you the situation, makes you to think at first.And then you can read the answers at the back,review your original point of view.And every example it providesshow us a possible breach in reality.Not those theory-based stories...Wanna secure your system?Just READ IT!! No matter buy it or borrow it...