Whether you're cool with Sourceforge or not these days, this looks interesting at the very least...
Looks like 'Pay what you want' only gets you two: Node.js Security and Cross-site Scripting. But beat the average price (currently $12.32) and you get all 7 books on offer ($765 worth).
https://deals.sourceforge.net/sales/pay-what-you-want-white-hat-hacker-bundle
Quote
Pay What You Want: White Hat Hacker BundleA whole bundle of penetration testing and general hacker stuff aimed at self-training for white hat hacking.
Master Penetration Testing with 7 Courses (60+ Hours) on Hacking Node.js Apps, Windows OS, Wi-Fi Devices & More
Looks like 'Pay what you want' only gets you two: Node.js Security and Cross-site Scripting. But beat the average price (currently $12.32) and you get all 7 books on offer ($765 worth).
https://deals.sourceforge.net/sales/pay-what-you-want-white-hat-hacker-bundle