The index of our security fundamentals and operations series: what to learn first, how the topics depend on each other, a practice plan with legal labs you can run yourself, and links to every part from the CIA triad to zero trust.
Part 5 of the security fundamentals series. Encoding, encryption, hashing, MACs and digital signatures compared by purpose and reversibility, symmetric versus asymmetric keys, and how TLS combines them all in one connection.
Part 4 of the security fundamentals series. Malware families, phishing, denial of service, man-in-the-middle and injection explained by the signs you would notice and the controls that stop them, without any attack instructions.
Part 3 of the security fundamentals series. Threat, vulnerability, exploit, impact and risk defined with one running example, why a CVSS score is not your risk, and a small risk register you can start this week.
Part 2 of the security fundamentals series. The networking concepts you need to reason about exposure: IP and MAC addresses, ports, TCP versus UDP, common services, and how to see what your own hosts are listening on.
Part 1 of the security fundamentals series. What cybersecurity actually covers, how it differs from information security, and how confidentiality, integrity and availability map to the code and systems you build every day.