What is SSL?

SSL stands for Secure Sockets Layer and, in short, it’s the best and  standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems, preventing criminals from reading and modifying any information transferred, including potential personal details. The two systems can be a server and a client (for example, a shopping website and browser) or server to server (for example, an application with personal identifiable information or with payroll information).

why is SSL important for websites?

It does this by making sure that any data transferred between users and sites, or between two systems remain impossible to read. It uses encryption algorithms to scramble data in transit, preventing hackers from reading it as it is sent over the connection. This information could be anything sensitive or personal which can include credit card numbers and other financial information, names and addresses.

With so much of our day to day transactions and communications happening online, there is very little reason for not using SSL. SSL supports the following information security principles:

• Encryption: protect data transmissions (e.g. browser to server, server to server, application to server, etc.)
• Authentication: ensure the server you’re connected to is actually the correct server.
• Data integrity: ensure that the data that is requested or submitted is what is actually delivered.

SSL can be used to secure:

• Online credit card transactions or other online payments.
• Intranet-based traffic, such as internal networks, file sharing, extranets and database connections.
• Webmail servers like Outlook Web Access, Exchange and Office Communications Server.
• The connection between an email client such as Microsoft Outlook and an email server such as Microsoft Exchange.
• The transfer of files over HTTPS and FTP(s) services, such as website owners updating new pages to their websites or transferring large files.
• System logins to applications and control panels like Parallels, cPanel and others.
• Workflow and virtualization applications like Citrix Delivery Platforms or cloud-based computing platforms.
• Hosting control panel logins and activity like Parallels, cPanel and others.

SSL allows sensitive information such as credit card numbers, social security numbers, and login credentials to be transmitted securely. Normally, data sent between browsers and web servers is sent in plain text—leaving you vulnerable to eavesdropping. If an attacker is able to intercept all data being sent between a browser and a web server, they can see and use that information.

More specifically, SSL is a security protocol. Protocols describe how algorithms should be used. In this case, the SSL protocol determines variables of the encryption for both the link and the data being transmitted.

All browsers have the capability to interact with secured web servers using the SSL protocol. However, the browser and the server need what is called an SSL Certificate to be able to establish a secure connection.

SSL secures millions of peoples’ data on the Internet every day, especially during online transactions or when transmitting confidential information. Internet users have come to associate their online security with the lock icon that comes with an SSL-secured website or green address bar that comes with an Extended Validation SSL-secured website. SSL-secured websites also begin with https rather than http.

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