SSL Complete Guide 2021: HTTP to HTTPS - Overview of the Certificates of Some Popular Websites

The video tutorial explores the use of HTTPS in websites, focusing on Google and Instagram. It explains how HTTPS ensures secure connections, indicated by a lock icon, and discusses the importance of valid certificates issued by authorities like Global Sign and Digicert. The tutorial also covers certificate structure, validity, and the role of fingerprints in verifying integrity. Differences between certificates for Google and Instagram are highlighted, including wildcard usage and domain-specific certificates. The video concludes with a preview of the next lecture on HTTP vs HTTPS.

What does a wildcard certificate allow you to do?

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What happens if you try to access a website without the 'www' prefix?

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What is the difference between HTTP and HTTPS protocols?

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