Public CAs, the Web PKI and Trust Stores Explained | Joshua Moses | Cybertrace Foundation

How the internet decides who to trust. Trust stores, the audits that gate entry, Certificate Transparency logs, and what happens at internet scale when a CA gets distrusted. Joshua Moses | Cybertrace Foundation | PKI and Digital Certificates | Video 14 of 32 WHAT YOU WILL LEARN IN THIS VIDEO • The public trust model, and how a browser or operating system decides which roots to trust • Trust stores: where trusted roots live on each platform, and why they differ • How a CA gets into a trust store, and the programs and audits that gate entry • Validation levels: domain, organization, and extended validation, and what each actually proves • Automated issuance, and how free short-lived auto-renewed certificates changed the web • Certificate Transparency: the public logs that catch misissued certificates, and how they work • What goes wrong at internet scale: misissuance, CA distrust events, and mass revocation • Web PKI failures: the untrusted root on one platform, the missing intermediate, the wrong validation level HANDS-ON LAB EXERCISE Examine your system trust store, find a certificate in a public transparency log, and inspect an automatically issued certificate. WHO THIS VIDEO IS FOR Built for system and network administrators, security analysts, DevOps and cloud engineers, and anyone who has ever clicked past a certificate warning and wanted to actually understand what it was telling them. ABOUT THE SERIES This is video 14 of the PKI and Digital Certificates course from Joshua Moses | Cybertrace Foundation. Every video teaches at an intermediate level while staying understandable to someone starting from zero, builds on the same lab and the same validation checklist from start to finish, and ends with a hands-on exercise you work yourself. This 32-part series takes you from what a certificate actually is through building a private CA, running enterprise PKI, and diagnosing every category of trust failure. Subscribe so you catch each one, and leave a comment if something here needs a deeper explanation. PKI Course Lab Guide: https://github.com/joshuanmoses/Cyber...