This independent study course teaches the security concepts organized around the published CompTIA Security+ (SY0-701) exam domains, helping you build durable understanding of threats, architecture, secure implementation, identity, risk, and cryptography. It is not affiliated with, authorized by, or endorsed by CompTIA, it does not itself certify or license anyone, and it makes no claims about exam outcomes. Every topic is taught conceptually and reinforced with study and lab practice you perform in your own environment.