What is a SSL Certificate?

What is a SSL Certificate?
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What is an SSL Certificate?

SSL stands for “Secure Sockets Layer”. That means there is a layer of encryption placed between a web server and someone trying to access content on it. At its core, an SSL certificate is encryption for web servers. It protects the exchange of information that takes place between a server and a user by utilizing a set of cryptographic keys: one public and one private. A public key is what encrypts your message and a private key is what decrypts it. This is how your users’ information is kept hidden from prying eyes. Once a user’s browser verifies that your website has a digitally signed acknowledgment of an SSL certificate, their encrypted session will begin. They’ll, of course, never actually see this exchange take place, but there are certain indicators and trust marks that let them know when a secure communication between your server and their website is taking place.

When Should You Use an SSL Certificate?

For a while, Google was really only targeting e-commerce websites and those collecting sensitive data from customers. Then, it began targeting anyone with a contact form. Now, the rule is that everyone needs to have an SSL certificate on their website. Granted, this is only a suggestion coming from Google, which means that the “penalty” noted above only occurs when visitors come to your site through the Chrome browser. But remember, Chrome is the most popular browser and has held their top rank for some time now. Unless your analytics tell you that your visitors don’t use Chrome, not getting an SSL certificate could be a risky move.

Why Does Your Website Need an SSL Certificate?

Google’s mission to make the web a more secure place has been going on for awhile. Back in 2014, it began to really put its weight behind the SSL certificate when it announced that HTTPS would become a ranking signal. At the time, it was only a gentle push Google was giving its users. In 2016, Google took additional steps to get the SSL certificate in place with more websites. This is when it introduced the “Not Secure” penalty to websites that processed passwords and credit card data over an unencrypted server. Starting in July 2018, Google now decrees that any website without an SSL certificate will be marked as “Not Secure”. While this was originally meant to be a penalty for websites handling sensitive information, Google now believes that all websites should be more responsible in providing secure online experiences.

Interestingly enough, Google is actually going to remove the green “Secure” label from Chrome beginning in September. As Product Manager for Chrome Security, Emily Schechter, explained:

“Users should expect that the web is safe by default, and they’ll be warned when there’s an issue. Since we’ll soon start marking all HTTP pages as ‘not secure’, we’ll step towards removing Chrome’s positive security indicators so that the default unmarked state is secure.”

Websites can pose many risks for consumers, especially for those who share private and privileged information through them, such as:

  • Social security numbers.
  • Credit card information.
  • Bank routing details.
  • Home addresses.

They’re taking a huge risk inputting that information into your website, so you need a way to keep that information safe.

Typically, when we look at the most common security vulnerabilities, the same recommendations are made over and over again to help users fortify their websites. One of the tools most frequently recommended for this? The SSL certificate.

How Do You Know an SSL Certificate Is Present?

There are various indicators used in browser address bars that let users know when there is an SSL certificate installed. The first is the actual web address. All websites with an SSL certificate will start with “https://” (as opposed to the old “http”). Now, the two SSL certificate indicators above are pretty standard across most browsers. However, for anyone using Chrome, they have the added bonus of being shown a “Secure” message with certain levels of encryption.

Currently, Chrome displays a red “Not Secure” message in the address bar only for websites that collect information through contact forms or e-commerce checkouts. Beginning in July 2018, that will change (more on that below). For now, websites that remain without an SSL certificate and on HTTP will see the “i” icon:

The message below the icon is what visitors will find when they inspect the address for an SSL certificate. On the other hand, for websites that do have one, they’ll find further details about security. If they click on “Certificate”, they’ll uncover details about the website’s actual SSL certificate, the owner of it, as well as the Certificate Authority (CA) that issued the secure encryption.

With this sort of blatant “secure” and “unsecure” notification presented by Google and other browsers, your visitors are assured that it’s safe enough to share their data with your website.

7 Benefits of SSL Certificates

Besides getting one because Google says you should, why would you want your website to have an SSL certificate?

  1. It’s safer for you and your visitors. Any good security plan will include an SSL certificate.
  2. Without one, your website will display a red “Not Secure” warning, which is not a good look for anyone.
  3. Having verified proof you’ve put a security measure in place for visitors can do wonders for boosting trust in your brand (and, subsequently, conversions).
  4. Because an SSL certificate publishes information about the domain owner and, sometimes, the corporation behind it, this gives your brand more credibility.
  5. Google uses SSL certificates as a strong ranking signal now.
  6. Using an SSL certificate when the competition doesn’t will give you a clear advantage in the customer’s’ eyes.
  7. e-Commerce websites that use SSL certificates are abiding by PCI compliance guidelines.

Disadvantages of SSL

With so many advantages, why would anyone not use SSL? Are there any disadvantages to using SSL certificates? Cost is an obvious disadvantage. SSL providers need to set up a trusted infrastructure and validate your identity so there is a cost involved. Performance is another disadvantage to SSL. Because the information that you send has to be encrypted by the server, it takes more server resources than if the information weren’t encrypted. The performance difference is only noticeable for web sites with very large numbers of visitors and can be minimized with special hardware in such cases. Overall, the disadvantages of using SSL are few and the advantages far outweigh them. It is critical that you properly use SSL on all websites. Proper use of SSL certificates will help protect your customers, help protect you, and help you to gain your customers trust and sell more.

References:
Suzanne Scacca, MWP | SSLShopper.com


Comments

  1. Thanks, it is very informative

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