SANS SEC 660 is basically an advanced hacking course. I don’t have much information on this one. It was requested by my friend. I was able to find some videos, audio versions, and PDFs of this course from 2012 and 2014. I am not sure how relevant this information is in 2020. As of 2020, this course’s latest version costs around $7000+. But I am going to leave the link here.