What is an SSL Certificate?
An SSL (Secure Sockets Layer) certificate is a digital certificate that establishes a secure connection between a web server and a browser. It is used to encrypt the data passing between the server and the browser, thus ensuring the confidentiality and integrity of the information exchanged.
The SSL certificate enables an HTTPS (HyperText Transfer Protocol Secure) connection to be set up, recognisable by the “s” added to the end of “http” in the website URL. When a website has a valid SSL certificate, it displays a padlock in the browser’s address bar, signaling to users that the communication is secure.
Here are some key features of SSL certificates:
Data encryption : When an SSL certificate is enabled, data exchanged between the server and the browser is encrypted, making it difficult for malicious third parties to intercept.
Website authentication: SSL certificates are issued by certification authorities (CAs) that verify the identity of the website owner. Thus, SSL Certificates help build user trust by guaranteeing the authenticity of the website.
Protection against Man-in-the-Middle attacks: SSL Certificates protect against attacks where a third party intercepts the communication between the server and the browser, ensuring that data is transmitted securely and is not altered en route.
Domain and Identity Validation: SSL Certificates can vary in terms of the validation performed by the Certificate Authority. Domain validation certificates simply verify that the applicant has control of the domain, while extended validation (EV) certificates perform a more rigorous verification of the identity of the organisation behind the website.
The use of an SSL certificate is essential to secure online transactions, exchanges of sensitive information such as login credentials, payment information and personal data. It is recommended that all websites use an SSL certificate to ensure user privacy and security.
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