You can get it directly from me (Feisty Duck is my small publishing business) here: https://www.feistyduck.com/books/bulletproof-ssl-and-tls/ https://www.feisty

You can get it directly from me (Feisty Duck is my small publishing business) here: https://www.feistyduck.com/books/bulletproof-ssl-and-tls/ https://www.feistyduck.com/books/bulletproof-ssl-and-tls/ This is the best option, because you get all digital formats (PDF, EPUB, and Kindle; there's no DRM), unlimited digital updates of the same edition, and a paperback if you want it. You can also buy it in paperback from Amazon and other online stores, but you can get the digital formats only from Feisty Duck. That said, it's possible to upgrade your paperback for a small free.