What is SSL?

SSL (Secure Sockets Layer) is a security protocol designed to ensure the secure exchange of information over the internet. SSL establishes an encrypted connection between the web server and the user's browser, preventing the data sent from being read or modified by third parties. This allows for the secure transmission of sensitive data such as users' personal information and credit card details.

SSL certificates are used to verify that a website really belongs to the organization it claims to be. An SSL certificate contains the identity of the certificate holder, who issued the certificate, the validity period and an encryption key for the certificate. When a user connects to a secure site, the browser checks the certificate and ensures that the data is securely encrypted. This process helps build trust between users and websites and increases the security of online transactions.

What does an SSL Security Certificate do?

An SSL Security Certificate plays a critical role in securing the exchange of information over the internet. This certificate encrypts the information that users send to the web server, ensuring that it can only be read by the correct recipient. In this way, users' sensitive data, such as personal and financial information, is protected against cyber attacks. At the same time, when a website has an SSL Certificate, it shows users that the site is trustworthy and the information they enter is secure, which increases user confidence and creates a safer online environment for website owners.

How Does SSL Work?

SSL (Secure Sockets Layer) uses an encryption protocol to ensure security during data transmission. First, a "handshake" takes place between the user's browser and the web server, during which an SSL certificate is sent by the server. This certificate is verified by the user and, once it is deemed trustworthy, an encrypted session is initiated between the browser and the server. After this stage, all data exchanged between the user and the server is encrypted using the encryption algorithm specified in the certificate. This creates a layer of security in which the data sent is only readable by the parties involved and cannot be accessed by third parties.

What happens without SSL?

Without SSL, security is seriously compromised when exchanging data over the internet. Sensitive data such as users' personal information and credit card details are transmitted in an open and unencrypted form, which allows malicious people to easily access and exploit this information. Communications between websites and users can be easily intercepted, data can be altered or stolen. This can lead to breaches of users' privacy, financial losses and reputational damage. Thus, the absence of SSL jeopardizes not only data security, but also the trust of internet users and the integrity of online transactions.

SSL Certificate Types

SSL (Secure Sockets Layer) certificates are used to secure websites and encrypt the data exchange between them and users. There are several different types of these certificates, each designed for different needs and use cases:

1. Domain Validation (DV) Certificates: DV certificates are the fastest and most affordable type of SSL certificate. They are issued only upon verification of control of the domain. This proves that the owner of the certificate retains control of a specific domain, but does not perform an in-depth validation of the organization itself. Ideal for small websites and blogs.
2. Organization Validation (OV) Certificates: OV certificates require validation of the organization as well as domain ownership. The certificate authority (CA) checks the existence and operational status of the organization. This type of certificate is suitable for businesses that want to show your users that your organization is trustworthy.
3. Extended Validation (EV) Certificates: EV certificates offer the highest level of security and validation standards. The certificate authority comprehensively verifies the legality, operational status, and domain ownership of the organization. These certificates maximize user trust by displaying a green ribbon or the organization's name in the browser address bar. Ideal for sites that require high security, such as financial institutions and online shopping sites.
4. Wildcard SSL Certificates: A wildcard SSL certificate protects a single domain and an unlimited number of its subdomains. This is a cost-effective solution, especially for large sites and organizations that use multiple subdomains under one domain.
5. Multi-Domain SSL Certificates (SAN or UCC Certificates): These certificates can protect multiple domain names and subdomains under a single certificate. They are designed for applications such as Microsoft Exchange and Microsoft Communications Server, but can be used for any type of website. Ideal for businesses that manage several different websites.

Each type of SSL certificate offers different levels of security and validation, meeting the diverse needs of businesses and webmasters. When choosing, it is important to opt for the one that best suits your needs and the level of trust of your users.