What is Secure Sockets Layer (SSL)?
Secure Sockets Layer (SSL) は、Web サーバーとブラウザーの間に暗号化された接続を確立するためのインターネット セキュリティ プロトコルです。
Sites using secure sockets layer technology begin with https：// rather than the http：// used by unsecured sites. The sites will also display a padlock icon when you view the site’s information, as shown below.
Secure Sockets Layer helps keep data transmitted between a server and browser private. This protects sensitive information such as login credentials, credit card details, and other personal data from being intercepted or tampered with by criminals, hackers, and other unauthorized parties.