Humble Bundle has released another O' Reilly cybersecurity collection. 16 books for £21 (or more, if you choose to donate).
Includes:
- Cybersecurity ops with bash
- Threat modeling
- Web app security
- The cybersecurity manager's guide
- Security as codeetc.
Definitely worth a look! (I'm not affiliated.)
https://www.humblebundle.com/books/cybersecurity-month-mega-bundle-oreilly-books