There is the fact that computers are faster and more effective year after year, and the impact on cyberspace security is enormous with the pursuit and perfection of quantum computers, which have proven to be sophisticated to the point of breaking down, in a matter of hours or even minutes, cryptographic systems that are used in current infrastructure such as banks, hospitals, private WiFi networks and most online systems that require security such as social networks, email accounts, messaging, among many others. This book is the collection of my personal research papers on this topic. In it, readers can find useful information on alternative methods to further enhance our security in cyberspace. These methods are one of a kind and may be, with more minds working on them, the much-needed alternatives to our near-future problems, which are just around the corner.