I just downloaded and read your book. Its was nice that it was a fast easy reading considering the topic of cyber security is usually painful to read about. Wondering your thoughts about the biggest security threat being none of your friends/coworkers/family/etc implement any security into their online activities while holding a lot of your personal information. For fun I've left my phone at home and just use everyone else's phone to get promotional offers and deals since I block ads. Might be paranoid, I've noticed marketing glitching on display screens at stores such as 7-Eleven that seem to be using targeted marketing on products the cashiers are not familiar with. Sometimes they just pop up for a moment and disappear while being specific to my own purchases while my phone is at home (using facial recognition?). Out of necessity, I think people, need to have a fake digital presence using kikeware for dealing with average people and society while keeping any important secure. Essentially digital alter egos.
As a side note there are memory techniques for remembering long random passwords, memory is a skill that can be learned. People train to memorize decks of cards and random information for fun/competition. In business remembering names/faces is a skill taught for sales.