This isn't Cyber Monday specific, but I always keep an eye on the Humble Bundle page. Currently they have a Cybersecurity 2019 deal with a minimum price of $1:

This isn't Cyber Monday specific, but I always keep an eye on the Humble Bundle page. Currently they have a Cybersecurity 2019 deal with a minimum price of $1: https://www.humblebundle.com/books/cybersecurity-2019-packt-books https://www.humblebundle.com/books/cybersecurity-2019-packt-...