Privacy note

If you give us your email address, it's used for exactly two things: sending you study resources and occasional updates about the book. It is never sold, rented, or shared with anyone else, and every email includes an unsubscribe link that works immediately. This site sets no cookies and runs no ad trackers. What your browser stores stays on your device: a flag that remembers you've unlocked the full question bank, your work and settings in the PBQ labs, the answers you've given in the Security+ drill so you can review your misses, and, for one visit only, whether you've closed the course banner. None of it is sent to us. If you email us an error report, your message and address are used only to check the question and reply to you. We count page visits with Cloudflare Web Analytics, which uses no cookies and doesn't identify you. One technical note for completeness: the site's fonts load from Google Fonts, so your browser requests those font files from Google's servers when a page loads.