This article is a summary of a YouTube video "How SSL certificate works?" by Sunny Classroom
TLDR HTTPS and SSL certificates are essential for secure communication between a browser and a web server, and it is important to use reputable websites when online shopping to ensure the security of personal information.
The appearance of the padlock icon in the address bar indicates that the web server's public key really belongs to the web server.
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The browser and web server exchange a secret key to encrypt traffic, but the key is never sent in plaintext to prevent interception.
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Anyone, including hackers, can launch an online business and get an SSL certificate for their sites, so it's important to use websites with a good reputation when online shopping.