Why is it important to connect a website security certificate?

If your website is still running on the insecure HTTP protocol, you are seriously jeopardizing the safety of your users and your business reputation. In 2024, an SSL certificate and HTTPS support have become mandatory not only for websites with confidential data, but also for any self-respecting web resource.

SSL (Secure Sockets Layer) is a cryptographic protocol that ensures secure data transfer between the user's browser and the website server. An SSL certificate serves as a confirmation that the website is genuine and trustworthy, and all data transmitted between the user and the site is securely encrypted and protected from interception by intruders.

Even if your website doesn't deal with payments and other sensitive information, using SSL is still necessary to protect user privacy, increase brand loyalty, and improve SEO performance. So let's start with the basics and understand what SSL is and how it works.

What is an SSL certificate and how it works

SSL stands for Secure Sockets Layer. It is a cryptographic protocol that ensures secure data transfer between a web browser and a server on the Internet.

When a user enters the address of a website with the prefix https:// in the browser, an SSL connection is launched. The browser and the server perform a so-called "handshake": they exchange digital certificates and encryption keys to verify each other's authenticity and establish a secure channel for data transmission.

If the server certificate is valid and does not raise suspicion, the browser creates a session key to encrypt all subsequent traffic. From this point on, any information exchanged between the user and the site (logins, passwords, credit card numbers, form content, etc.) will be securely encrypted and inaccessible to intruders, even if intercepted.

An SSL certificate serves as a proof of identity for your website. It is issued by trusted Certificate Authorities (CAs) after verifying company and domain information. The certificate contains information about the website owner, domain, validity period, and the digital signature of the certifying authority.

Modern browsers have a built-in list of trusted Certificate Authorities. If the certificate presented by the site was issued by one of these centers, has not expired, and matches the site's domain name, the browser will consider the connection trusted and display a 🔒 padlock next to the address bar.

By accessing the site via HTTPS, users can be sure that:

• They have established a connection to the exact server they need, and not to a fraudulent lookalike site.
• All data transmitted between their device and the site is encrypted and cannot be intercepted or read by intruders.
• The integrity of the transmitted information is not compromised, meaning that the data has not been altered or tampered with during transmission.

According to W3Techs, in 2024, 95.8% of websites on the Internet use SSL/HTTPS. For comparison, in 2016, this figure was only 52.4%. This rapid growth in the popularity of SSL is due to several factors:

• The growing attention of users to the security of their data and intolerance to websites that do not support HTTPS.
• Browsers' policy of visually highlighting insecure sites and displaying warnings when logging in to HTTP.
• Official recommendations from search engines and SEO experts to switch to HTTPS for all websites.
• Increase in the number of cyberattacks and data leaks, in particular, by exploiting vulnerabilities in unsecured connections.

SSL certificates differ in the type of verification performed by the certificate authority before issuing them. This determines the level of user confidence in the website and the visual display of a secure connection in the browser. Next, we'll take a look at the main types of SSL certificates and their features.

Types of SSL certificates and their differences

There are several types of SSL certificates that differ in the level of verification and the way information about the site is displayed in the browser. Choosing the right type depends on the specifics of your website, budget, and the required level of trust. Let's analyze the main options:

Domain Validation (DV)

This is the simplest and fastest type of SSL certificate to obtain. The certification authority verifies only the fact that the applicant controls the domain by sending a letter to email addresses such as admin@example.com or checking a special DNS record.

• Low cost: $10-100 per year
• Issue: 5-15 minutes
• Verifies the domain, but not the organization
• Shows the 🔒 lock in the browser

Suitable for simple websites, blogs, and non-profit projects. Not recommended for websites that process sensitive data and payments.

Organization Validation (OV)

The certification center additionally verifies the reality of the applicant company: legal address, phone number, and the right to conduct business. It requires sending supporting documents and takes longer to verify.

• Average cost: $100-500 per year
• Release: 1-5 days
• Confirms the domain and reality of the organization
• Shows the 🔒 padlock and company name in the browser

Recommended for corporate websites, online stores, websites with personal data of users.

Extended Validation (EV)

This type of certificate provides the highest level of trust and requires the most thorough verification of the applicant. The certification authority contacts the company, requests legal documents, statutory documents, and conducts their examination.

• High cost: $250-1500 per year
• Release: 1-10 days, sometimes longer
• Confirms the domain, organization, and detailed information about it
• Displays a green address bar with the company name

Recommended for banks, financial services, large e-commerce projects, websites with payments and confidential information.

Wildcard SSL

This certificate allows you to protect an unlimited number of subdomains of the same level within the main domain. For example, a certificate for *.example.com is suitable for blog.example.com, shop.example.com, travel.example.com, etc.

• The cost is 2-3 times higher than regular SSL
• Release time: 1-3 days
• Verifies the main domain and subdomains
• Validation type - DV, OV or EV

Suitable for websites with a large number of subdomains, multilingual and multiregional projects. Allows you to save on the purchase and renewal of many individual certificates.

When choosing the type of SSL certificate, evaluate the reputational risks, financial capabilities, and technical requirements of your project. If you accept online payments, work with personal data, or want to ensure maximum user trust, look towards EV SSL. If your website does not process sensitive information and is not connected to critical services, you can use DV SSL.

But even the simplest Domain Validation certificate will be better than the complete absence of SSL. After all, it provides traffic encryption and protects your users' data from intruders. Let's take a closer look at what threats SSL can protect against and why it is so important.

Impact of SSL on website and user data security

Using an SSL certificate and the HTTPS protocol allows you to protect your website and user data from several types of popular cyberattacks at once:

Sniffing attacks (traffic sniffing)

When data is transmitted over an unsecured HTTP connection, an attacker can intercept it using a packet sniffer (for example, Wireshark). This is especially true for public Wi-Fi networks in cafes, airports, and shopping centers.

SSL/HTTPS encrypts all traffic between the browser and the server, so even if intercepted, it will be an unreadable set of characters. It can be decrypted only with the help of a private key, which only a legitimate server has.

Man-in-the-Middle attacks

This type of attack involves intercepting traffic between a user and a website and actively manipulating the transmitted data. For example, a hacker can redirect a victim to a fake version of a website and intercept the entered logins and passwords.

An SSL certificate guarantees the authenticity of a website. It cryptographically confirms that you are connecting to the exact domain that is specified in the address bar. Even if the hacker manages to redirect the user to a fake site, they will not be able to present a valid SSL certificate and the browser will display a warning.

Replay Attacks

In this type of attack, an attacker passively intercepts and stores data packets that are transmitted between a user and a server. The attacker can then use this data to repeat the request on behalf of the user, for example, to resubmit a payment or submit forms.

SSL protects against this by using unique session keys for each connection. Even if a hacker intercepts encrypted traffic, they will not be able to decrypt it and reuse it to send valid requests to the server.

In addition to protecting against the above threats, SSL/HTTPS ensures compliance with industry security standards, for example:

• PCI DSS - for websites that accept bank card payments. SSL is one of the mandatory requirements of the standard.
• HIPAA and HITECH - for websites of medical institutions in the United States that work with patient health data.
• GDPR - for websites that collect personal data from residents of the European Union. The use of HTTPS is considered an adequate measure of PD protection.
• Federal Law 152 is an analogue of the GDPR for websites targeting Russian citizens.

Implementing an SSL certificate is the easiest and most effective way to secure the connection between your website and visitors' browsers. This helps prevent leakage and compromise of sensitive data, reduce reputational risks, and meet user expectations and regulatory requirements.

According to the Sophos 2023 report, the average data breach costs a company $4.35 million. At the same time, 64% of leaks are due to attacks on web applications, much of which are the result of data transmission over insecure channels.

But in addition to direct protection against threats, SSL offers many indirect benefits for your business. The use of HTTPS increases the trust and loyalty of visitors, improves behavioral factors and website conversion. Let's take a closer look at this aspect.

The impact of SSL on user trust and website conversion

In addition to the objective security benefits, an SSL certificate provides tangible benefits for user trust and website marketing performance. Let us consider the main points:

Visual indicators of a secure connection

When a user sees the 🔒 padlock icon next to the address bar of the browser, they subconsciously increase their trust in the site. This is especially true for online stores, websites with feedback forms, subscriptions, or registration.

In the case of EV SSL, the name of the company that owns the website is also displayed in the address bar. This further increases trust and helps the brand stand out from the competition.

Warn browsers about an insecure connection

If your site is using an insecure HTTP protocol, modern browsers will signal this to the user in every possible way:

• In Chrome, insecure sites are marked as "Insecure" 🚨 in the address bar.
• In Firefox, a security warning appears when you click on the login/password field on an HTTP site.
• Safari displays a padlock with a red cross through 🔒❌ for websites without SSL.

Seeing such warnings, many users will prefer to leave the site without performing the targeted action. Especially when it comes to entering personal data or making a payment.

Increase conversion and sales with HTTPS

Numerous studies and the experience of large brands confirm that the transition to HTTPS has a positive impact on the willingness of users to make purchases and leave their data.

Here are some illustrative figures:

• According to the Baymard Institute, 18% of users will abandon a purchase if the store's website does not look reliable and secure.
• A study by GlobalSign found that 84% of shoppers will leave an online store if they see a browser warning about an insecure connection.
• After switching to HTTPS, Best Buy's online store recorded a 5.2% increase in conversion.

Increased time on site, reduced bounce rate

In addition to the direct impact on sales, HTTPS also improves user metrics. Visitors are more willing to browse multiple pages, stay on the site longer, and leave less often without performing targeted actions.

For example, when Wired.com switched to HTTPS, the bounce rate for users with iOS devices dropped from 9% to 3.5%. And MakeMyTrip.com received +20% of traffic and +60% of sales from desktops after migrating to HTTPS.

Of course, you shouldn't consider SSL as a panacea that is guaranteed to improve all website metrics. Many other factors influence conversion and sales: usability, pricing, brand awareness. But all things being equal, a website with HTTPS will inspire more trust and loyalty among users than a competitor without SSL.

Also, don't forget about comprehensive website optimization when switching to HTTPS: setting up redirects, updating links, sitemaps, and robots.txt files. Errors and shortcomings during migration can negatively affect the usability and functionality of certain sections, which will outweigh all the possible advantages of SSL.

In addition to the visible impact on user trust, HTTPS also brings tangible benefits for SEO website promotion. How to stand out in search results and get more organic traffic using SSL is discussed in the next section.

How SSL affects SEO and search engine rankings

Back in 2014, Google officially named HTTPS a ranking signal. And in the following years, the search engine has repeatedly stated that it will give preference to secure sites, all other things being equal.

Here are some important facts about the impact of SSL on SEO and search traffic:

HTTPS as a ranking factor

According to Google representatives, the search engine's algorithms consider the presence of SSL as a positive signal. At the same time, the weight of the factor is not disclosed, but it is believed to be growing every year.

Brian Dean's analysis of Google search results showed that on average, HTTPS sites rank higher than HTTP sites. Of course, this doesn't mean that SSL will automatically bring your site to the top. But along with other factors (content relevance, loading speed, mobile responsiveness), it gives you an advantage.

Increase search visibility and CTR

Sites with SSL are highlighted in search results with the 🔒 padlock icon and the "Trusted" indicator. This increases the trust of users and encourages them to click on such snippets more often.

According to CrazyEgg, sites marked as "safe" receive 25-30% more clicks in search results on average than regular HTTP sites in the same positions.

Recommendations of Google and other search engines

Since 2016, Google has been strongly recommending that all websites be migrated to HTTPS, including those that do not collect sensitive information. The search engine regularly publishes guides and checklists on migration, and adds relevant notifications to the Search Console.

Other popular search engines (Bing, Yahoo) also support the initiative to switch to a secure protocol and use HTTPS as a ranking signal.

Indirect impact on SEO metrics

As we analyzed in the previous section, HTTPS has a positive impact on user factors: browsing depth, time on site, bounce rate. This, in turn, signals to search engines about the quality and usefulness of the site, which can indirectly affect the rankings.

In addition, many owners of reputable websites prefer to put backlinks only to HTTPS resources. Therefore, the presence of SSL can facilitate the task of link building.

Despite all of the above advantages, you shouldn't consider SSL as a magic pill that will instantly bring your website to the top. This is just one of the many factors that search engines take into account. Without high-quality content, user-friendly structure, fast loading, and adaptability, you still won't be able to achieve high rankings.

However, in 2024, the absence of SSL on a website will be perceived as a clear sign of irrelevance and backwardness. And given the growing competition for organic traffic and the increasing requirements of search engines, this factor should definitely not be ignored.

Technical aspects of installing and configuring an SSL certificate

The process of implementing an SSL certificate on a website may seem complicated and confusing, especially for beginners. But if you follow a clear plan and recommendations, everything will go smoothly and without unpleasant surprises. Let's take a look at the main steps:

Choosing a reliable SSL provider

There are dozens of companies on the market that offer SSL certificate services. When choosing one, pay attention to the following factors:

• Reputation and history of the company, customer reviews
• Compatibility with the most popular browsers and operating systems
• Certificate options (DV, OV, EV) and pricing policy
• Convenience of the control panel and technical support
• Additional services (monitoring, automatic renewal)

Among the most well-known and reliable SSL providers are DigiCert, Comodo, GeoTrust, GlobalSign, Let's Encrypt (free DV certificates).

Generating a CSR and a private key

Before purchasing an SSL certificate, you need to generate 2 files on your web server:

1. CSR (Certificate Signing Request) - a text file with information about the domain and company, which is sent to the certification authority for signature.
2. Private key - a secret part of a cryptographic pair that is installed on the server and used to decrypt traffic. It must remain confidential.

Special utilities, such as OpenSSL, are used to generate these files. Most hosting providers provide ready-made interfaces for creating CSRs and keys directly from the control panel.

Installing an SSL certificate on the server

After approving the application and receiving the signed certificate, you need to install it on the web server. The exact process depends on the type of server (Apache, Nginx, IIS) and hosting control panel (cPanel, Plesk, ISP Manager).

As a rule, the installation is reduced to the following steps:

1. Uploading the archive with the certificate and intermediate certificates to the server via FTP/SFTP.
2. Configuring the web server to use the downloaded files for the specified domain (editing configuration files or using the built-in mechanisms of the control panel).
3. Check the performance of the SSL connection through the browser and special online services (SSL Checker, SSL Labs).

Many hosting providers offer the service of automatic installation of an SSL certificate. In this case, you just need to make a few clicks in the control panel, and the system will generate a CSR, send it to a certification authority, and install the certificate on the server.

Setting up a redirect from HTTP to HTTPS

To ensure that your website visitors are automatically redirected to a secure connection, you need to set up an unconditional HTTP to HTTPS redirect for all pages of your website.

The methods of implementing redirects depend on the features of your web server and website:

• At the web server level (Apache, Nginx). Special directives are added to the configuration file of the virtual host to redirect all HTTP requests to similar addresses via HTTPS.
• At the CMS level (WordPress, Joomla). In the settings of the content management system, the option to force the use of HTTPS for all pages and resources of the site is enabled.
• At the code level (PHP, JavaScript). Conditions are added to the site code that check the current protocol and make a redirect if the request came via HTTP.

In any case, the redirect should return a 301 code (permanent redirect) so that search engines remove old HTTP versions of pages from the index and eventually replace them with HTTPS.

Update your website code, links, and files

After enabling SSL, you need to carefully check your site for mixed content - a situation when a page is loaded via HTTPS, but some of its resources (images, scripts, styles) are pulled up via unsecured HTTP.

The presence of mixed content triggers security warnings in browsers and negates all the benefits of using HTTPS. Therefore, it is important to replace all internal absolute links from http:// to https:// manually or with the help of special scripts.

It is also necessary to update all external services and resources integrated with the website (analytics systems, advertising networks, social media widgets, payment forms) by specifying a new HTTPS address in their settings instead of the old HTTP one.

Don't forget about the robots.txt file - you need to write the Host and Sitemap directives in it, indicating the HTTPS versions. The sitemap.xml file should also contain all the current page addresses, taking into account the protocol change.

Update the settings in the webmaster panels

To help search engines re-index your site to HTTPS faster and without any problems, add the new version to the appropriate webmaster tools:

• Google Search Console - add a new property for the HTTPS version of your site, set up page tracking, and upload an updated sitemap.xml file.
• Bing Webmaster Tools - add the HTTPS site as a new property and submit a request for reindexing.

Do not immediately delete old versions of the site from the webmaster panels. Leave them there for a while to track the reindexing process and compare performance.

As you can see, the process of installing and configuring SSL consists of many nuances and can take from several hours to several days depending on the features of your site. But the result is definitely worth the effort - your website will become safer and more attractive to both users and search engines.

In conclusion, we'll look at issues related to maintaining and renewing SSL certificates. It's not enough to install a certificate once and forget about it - you need to constantly monitor it to avoid website downtime and loss of visitor trust.

Monitoring and recovery of SSL certificates

Like any other security tool, an SSL certificate needs to be monitored regularly and updated in a timely manner. An expired or malfunctioning certificate can lead to serious consequences:

• Visitors will see a warning about an insecure connection and leave the site en masse
• Search engines will stop indexing pages, which will lead to a sharp decrease in organic traffic
• Critical website functions (payment, personal account, API) may stop working.

To prevent this from happening, it is important to keep track of the certificate's validity and renew it in advance. Most SSL providers start sending reminders about the imminent expiration of the certificate 3 months before the deadline.

Do not ignore these emails and do not postpone the renewal until the last day. It is better to do it at least a week before the expiration date, so that in case of any overlaps with the reissue and installation of the certificate, you have time to fix them.

In addition to manual tracking, many hosting providers and SSL providers offer an automatic certificate renewal service. In this case, you don't need to worry about the timing - the system will reissue the certificate and install it on the server without your participation.

Some free certification authorities (Let's Encrypt) initially issue certificates with a short validity period (3 months), but with the possibility of automatic renewal through a special client (Certbot). Such a scheme allows you to ensure the security and relevance of certificates without unnecessary costs.

It is also useful to set up regular monitoring of the SSL certificate using special tools (SSL Labs, SSL Checker). They automatically check the correctness of the certificate installation, its validity, cryptographic algorithms used, and other parameters. If any problems are detected, you will be notified immediately and will be able to fix them promptly.

Another important point is the secure backup and storage of SSL private keys. In case you reinstall your web server, migrate to another hosting service, or recover from a disaster, you will need the original private key with which the certificate was issued.

Keep duplicate keys in a safe place (for example, an encrypted archive in the cloud or on removable media) that only authorized persons can access.

Remember that a compromised private key allows attackers to impersonate your website and intercept traffic. If you suspect a key leak, you should immediately revoke the old certificate and generate a new key pair.