{"id":194478,"date":"2025-03-04T17:50:27","date_gmt":"2025-03-04T16:50:27","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=194478"},"modified":"2025-05-09T12:04:10","modified_gmt":"2025-05-09T11:04:10","slug":"all-about-secure-sockets-layer","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/all-about-secure-sockets-layer","title":{"rendered":"What is a SSL (Secure Sockets Layer) certificate? How does it work?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"194478\" class=\"elementor elementor-194478\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-221b539 e-flex e-con-boxed e-con\" data-id=\"221b539\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-003b272 elementor-widget elementor-widget-text-editor\" data-id=\"003b272\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><b>SSL, or Secure Sockets Layer, is one of the initial technologies developed to secure online exchanges by establishing an encrypted connection between a user and a server. Discover its origins, how it functions, and its importance in safeguarding online data!<\/b><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f5d19b elementor-widget elementor-widget-text-editor\" data-id=\"8f5d19b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">With the widespread occurrence of <\/span><b>online exchanges<\/b><span style=\"font-weight: 400;\">, <\/span><b>data security<\/b><span style=\"font-weight: 400;\"> has become a vital issue. Banking transactions, email communications, and connections to <\/span><b>digital services<\/b><span style=\"font-weight: 400;\">: every interaction on the internet is vulnerable to <\/span><b>malicious interceptions<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Without a strong encryption protocol, <\/span><b>confidential information<\/b><span style=\"font-weight: 400;\"> can be compromised, leading to <\/span><b>data theft<\/b><span style=\"font-weight: 400;\"> and <\/span><b>Man-in-the-Middle<\/b><span style=\"font-weight: 400;\"> attacks. To mitigate these risks, technologies have been developed to ensure <\/span><b>the confidentiality and integrity of communications<\/b><span style=\"font-weight: 400;\">. One of the first protocols to secure online exchanges was SSL: Secure Sockets Layer.<\/span><\/p><p><span style=\"font-weight: 400;\">Though it has been succeeded by <\/span><b>TLS (Transport Layer Security)<\/b><span style=\"font-weight: 400;\">, SSL laid the foundation for a more secure Internet and remains a widely recognized term in the field of cybersecurity&#8230;<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53215ba elementor-widget elementor-widget-image\" data-id=\"53215ba\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"659\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-1.webp\" class=\"attachment-full size-full wp-image-194484\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-1.webp 1000w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-1-300x198.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-1-768x506.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7e2d447 e-flex e-con-boxed e-con\" data-id=\"7e2d447\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e73513b elementor-widget elementor-widget-heading\" data-id=\"e73513b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-xl\">A protocol to prevent data interception<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84ed497 elementor-widget elementor-widget-text-editor\" data-id=\"84ed497\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Developed by Netscape in the 1990s, SSL is an <\/span><b>encryption protocol<\/b><span style=\"font-weight: 400;\"> designed to secure communications between a client (web browser, application) and a server (website, messaging, <\/span><a href=\"https:\/\/datascientest.com\/en\/all-about-api-vulnerability\"><span style=\"font-weight: 400;\">API<\/span><\/a><span style=\"font-weight: 400;\">). It was widely adopted to <\/span><b>protect the exchange of sensitive information<\/b><span style=\"font-weight: 400;\"> like passwords, credit card numbers, and personal data.<\/span><\/p><p><span style=\"font-weight: 400;\">Its primary aim is to prevent interception or modification of <\/span><b>data in transit<\/b><span style=\"font-weight: 400;\">. Using sophisticated encryption mechanisms, SSL ensures that only authorized parties can access the <\/span><b>information exchanged<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">This protocol led to the development of <\/span><b>HTTPS<\/b><span style=\"font-weight: 400;\">: the secure version of HTTP, recognizable by the padlock symbol in the browser&#8217;s address bar. However, due to <\/span><b>vulnerabilities<\/b><span style=\"font-weight: 400;\"> identified in its early iterations, SSL has been progressively replaced by TLS (Transport Layer Security).<\/span><\/p><p><span style=\"font-weight: 400;\">This transition enhances <\/span><b>the protocol&#8217;s security and robustness<\/b><span style=\"font-weight: 400;\">. Despite this, the term SSL is still commonly used to refer to TLS, especially in the context of <\/span><b>SSL certificates<\/b><span style=\"font-weight: 400;\"> that verify a website&#8217;s identity and encrypt communications.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-877a864 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"877a864\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Master web security protocols<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c81bdd0 e-flex e-con-boxed e-con\" data-id=\"c81bdd0\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d234895 elementor-widget elementor-widget-heading\" data-id=\"d234895\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">How does it work?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0c2397 elementor-widget elementor-widget-text-editor\" data-id=\"f0c2397\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The SSL protocol relies on an <\/span><b>encryption process<\/b><span style=\"font-weight: 400;\"> to enable secure communications between a client (browser, application) and a <\/span><a href=\"https:\/\/datascientest.com\/en\/all-about-proxy-servers\"><span style=\"font-weight: 400;\">server<\/span><\/a><span style=\"font-weight: 400;\">. This mechanism includes several steps. Initially, the <\/span><b>SSL handshake<\/b><span style=\"font-weight: 400;\"> establishes a secure connection between a <\/span><b>client<\/b><span style=\"font-weight: 400;\"> and a <\/span><b>server<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">The client sends a request to the server with supported <\/span><b>SSL\/TLS versions<\/b><span style=\"font-weight: 400;\">, a list of possible ciphers, and a random identifier. This is known as the &#8220;Client Hello.&#8221; The server then responds with a &#8220;Server Hello&#8221;: it chooses the most appropriate SSL\/TLS version, selects a <\/span><b>cipher algorithm<\/b><span style=\"font-weight: 400;\">, and sends its own random identifier.<\/span><\/p><p><span style=\"font-weight: 400;\">Next, the server sends its SSL certificate, which contains its <\/span><b>public key<\/b><span style=\"font-weight: 400;\"> and is signed by a <\/span><b>Certificate Authority (CA)<\/b><span style=\"font-weight: 400;\">. The client verifies its validity and uses the server&#8217;s public key to <\/span><b>encrypt a secret session key<\/b><span style=\"font-weight: 400;\">, which will be employed for all <\/span><b>secure communications<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Once the key is shared, all data exchanged between the client and server is encrypted using a <\/span><b>symmetric algorithm<\/b><span style=\"font-weight: 400;\">. Through this process, even if an attacker intercepts the communications, they cannot decipher the data without the <\/span><b>server&#8217;s private key<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7ee67bb elementor-widget elementor-widget-image\" data-id=\"7ee67bb\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"601\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-4.webp\" class=\"attachment-full size-full wp-image-194488\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-4.webp 1000w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-4-300x180.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-4-768x462.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c73dd03 e-flex e-con-boxed e-con\" data-id=\"c73dd03\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4c4f232 elementor-widget elementor-widget-heading\" data-id=\"4c4f232\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">The key role of SSL certificates<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a0cac01 elementor-widget elementor-widget-text-editor\" data-id=\"a0cac01\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">An SSL certificate is a digital file that authenticates a website&#8217;s identity and establishes a <\/span><b>secure connection<\/b><span style=\"font-weight: 400;\">. It is issued by a Certification Authority (<\/span><b>CA<\/b><span style=\"font-weight: 400;\">) and includes several pieces of information: the secure domain name, the public key used for encryption, the certification authority&#8217;s signature, and the certificate&#8217;s expiration date.<\/span><\/p><p><span style=\"font-weight: 400;\">Certificates are classified into three levels of validation. The first level, <\/span><b>DV or Domain Validation<\/b><span style=\"font-weight: 400;\">, pertains only to the domain and provides minimal security.<\/span><\/p><p><b>OV or Organization Validation<\/b><span style=\"font-weight: 400;\"> involves verifying the legal existence of a company. Lastly, <\/span><b>EV or Extended Validation<\/b><span style=\"font-weight: 400;\"> involves thorough validation and displays the company&#8217;s name in the browser&#8217;s address bar. A site secured with SSL shows HTTPS and a padlock in the address bar, indicating that <\/span><b>data transmitted is fully encrypted<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32608e1 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"32608e1\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn how to secure a website<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f1b7d86 e-flex e-con-boxed e-con\" data-id=\"f1b7d86\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fb67e72 elementor-widget elementor-widget-heading\" data-id=\"fb67e72\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">SSL vs. TLS: What are the differences?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8872895 elementor-widget elementor-widget-text-editor\" data-id=\"8872895\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">While SSL was a leap forward for <\/span><b>securing Internet communications<\/b><span style=\"font-weight: 400;\">, it is now outdated. TLS has replaced it, offering enhanced protection against attacks. The <\/span><b>SSL 2.0 and 3.0 versions<\/b><span style=\"font-weight: 400;\"> were plagued by numerous security vulnerabilities. The <\/span><b>POODLE attack (Padding Oracle On Downgraded Legacy Encryption)<\/b><span style=\"font-weight: 400;\"> exploited SSL 3.0 to access encrypted data.<\/span><\/p><p><span style=\"font-weight: 400;\">Additionally, the <\/span><b>BEAST vulnerability (Browser Exploit Against SSL\/TLS)<\/b><span style=\"font-weight: 400;\"> made it possible to intercept and decrypt SSL\/TLS 1.0 sessions. The notorious <\/span><b>Heartbleed bug<\/b><span style=\"font-weight: 400;\"> in <a href=\"https:\/\/datascientest.com\/en\/openssl-role-and-functions-of-this-library\">OpenSSL<\/a> also exposed sensitive information on servers.<\/span><\/p><p><span style=\"font-weight: 400;\">In light of these threats, major organizations and browsers have phased out SSL in favor of TLS, which now stands as the security standard. This new protocol utilizes <\/span><b>more robust algorithms like AES and ChaCha20<\/b><span style=\"font-weight: 400;\"> to prevent data decryption and attacks aimed at recovering private keys.<\/span><\/p><p><span style=\"font-weight: 400;\">Overall, <\/span><b>TLS 1.2 and TLS 1.3<\/b><span style=\"font-weight: 400;\"> provide significantly higher security guarantees. Nevertheless, the term &#8220;SSL&#8221; continues to be widely used in general discussions about secure connections.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ceb01a4 elementor-widget elementor-widget-image\" data-id=\"ceb01a4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"603\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-3.webp\" class=\"attachment-full size-full wp-image-194489\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-3.webp 1000w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-3-300x181.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-3-768x463.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-70e8adf e-flex e-con-boxed e-con\" data-id=\"70e8adf\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1335c58 elementor-widget elementor-widget-heading\" data-id=\"1335c58\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">Why has SSL\/TLS become essential?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f7b063 elementor-widget elementor-widget-text-editor\" data-id=\"3f7b063\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The adoption of SSL\/TLS encryption has become crucial for ensuring the <\/span><b>security of internet exchanges<\/b><span style=\"font-weight: 400;\">. This protocol is essential in safeguarding transactions, <\/span><b>protecting users<\/b><span style=\"font-weight: 400;\">, and <\/span><b>meeting legal requirements<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">First, consider data protection. Websites handling <\/span><b>confidential information<\/b><span style=\"font-weight: 400;\"> (such as login credentials, passwords, and financial data) must ensure their security. Without encryption, this data could be intercepted by attackers using various techniques. <\/span><b>Packet sniffing<\/b><span style=\"font-weight: 400;\"> involves capturing unencrypted data packets transmitted over the Internet. Likewise, a <\/span><b>Man-in-the-Middle (MitM) attack<\/b><span style=\"font-weight: 400;\"> allows a cybercriminal to intercept and alter communications between a user and a server.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7898f9 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"c7898f9\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">How to identify a cyber attack<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f90f509 elementor-widget elementor-widget-text-editor\" data-id=\"f90f509\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">However, SSL\/TLS enables the <\/span><b>encryption of data, making it unreadable<\/b><span style=\"font-weight: 400;\"> to unauthorized third parties. These attacks consequently become ineffective. Additionally, it serves as a trust guarantee. A site secured by an <\/span><b>SSL\/TLS certificate<\/b><span style=\"font-weight: 400;\"> ensures that the user is communicating with the authentic server and not <a href=\"https:\/\/datascientest.com\/en\/all-about-phishing\">a fraudulent one intended for phishing<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">Conversely, a non-HTTPS website can be replicated by an attacker to deceive users and steal their data. With SSL\/TLS and a validated certificate, a browser displays a <\/span><b>secure padlock<\/b><span style=\"font-weight: 400;\"> and authenticates the <\/span><b>domain<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Moreover, since 2014, <\/span><b>Google prioritizes HTTPS sites<\/b><span style=\"font-weight: 400;\"> in search results. A secure site thus enjoys a <\/span><a href=\"https:\/\/datascientest.com\/en\/seo-search-engine-optimisation-what-is-it-what-is-it-used-for\"><span style=\"font-weight: 400;\">better SEO ranking<\/span><\/a><span style=\"font-weight: 400;\"> than its HTTP counterpart. The Google Chrome browser and many others show a <\/span><b>&#8220;Not Secure&#8221;<\/b><span style=\"font-weight: 400;\"> warning for HTTP sites, which might deter users from accessing them.<\/span><\/p><p><span style=\"font-weight: 400;\">Beyond these advantages, SSL\/TLS often constitutes a legal obligation for companies handling <\/span><b>sensitive data<\/b><span style=\"font-weight: 400;\">. The <a href=\"https:\/\/datascientest.com\/en\/understanding-gdpr-definition-and-its-crucial-impact-on-businesses\">EU&#8217;s GDPR<\/a> mandates securing exchanges involving <\/span><b>personal data<\/b><span style=\"font-weight: 400;\">, while PCI DSS requires using TLS 1.2+ for <\/span><b>online payments<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3fe1189 elementor-widget elementor-widget-image\" data-id=\"3fe1189\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"601\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-2.webp\" class=\"attachment-full size-full wp-image-194496\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-2.webp 1000w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-2-300x180.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/03\/Secure-Sockets-Layer-DataScientest-2-768x462.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-586ddf2 e-flex e-con-boxed e-con\" data-id=\"586ddf2\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d7fa489 elementor-widget elementor-widget-heading\" data-id=\"d7fa489\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">SSL, a key technology for data protection<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1e19b8 elementor-widget elementor-widget-text-editor\" data-id=\"c1e19b8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">For the <\/span><b>securing of online communications<\/b><span style=\"font-weight: 400;\">, SSL was a monumental innovation and laid the groundwork for modern encryption. However, due to its vulnerabilities, it has been succeeded by TLS, which is now the standard for <\/span><b>securing exchanges<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Employing an <\/span><b>SSL\/TLS certificate<\/b><span style=\"font-weight: 400;\"> is vital for protecting user data, verifying the authenticity of <\/span><b>websites<\/b><span style=\"font-weight: 400;\">, and complying with regulations such as the <\/span><b>GDPR<\/b><span style=\"font-weight: 400;\">. To learn about SSL, TSL, and other web security technologies, you can <\/span><b>opt for DataScientest<\/b><span style=\"font-weight: 400;\">. Our diverse <\/span><b>cybersecurity training programs<\/b><span style=\"font-weight: 400;\"> will equip you with all the skills required to become an analyst, <\/span><a href=\"https:\/\/datascientest.com\/en\/all-about-cybersecurity-engineering\"><span style=\"font-weight: 400;\">engineer<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><b>consultant<\/b><span style=\"font-weight: 400;\">, or <\/span><b>administrator<\/b><span style=\"font-weight: 400;\"> in this field.<\/span><\/p><p><span style=\"font-weight: 400;\">We also provide courses to <\/span><b>become a web developer<\/b><span style=\"font-weight: 400;\">, such as the <\/span><a href=\"https:\/\/datascientest.com\/en\/course-devops\"><span style=\"font-weight: 400;\">DevOps Engineer<\/span><\/a><span style=\"font-weight: 400;\"> and Software Engineer curricula. These programs will train you to <\/span><b>create websites and web applications<\/b><span style=\"font-weight: 400;\"> with a high level of security!<\/span><\/p><p><span style=\"font-weight: 400;\">All our courses are conducted remotely and enable you to obtain a <\/span><b>state-recognized diploma<\/b><span style=\"font-weight: 400;\"> and a <\/span><b>professional certification<\/b><span style=\"font-weight: 400;\">. Our institution is eligible for funding through CPF or France Travail. <\/span><b>Discover DataScientest!<\/b><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2e93db elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"b2e93db\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover our courses<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75625bb elementor-widget elementor-widget-text-editor\" data-id=\"75625bb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">You now know everything about SSL. For more insights on this topic, check out our article on the web developer profession and our article on the Open Web Application Security Project (OWASP)!<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-06f541b e-flex e-con-boxed e-con\" data-id=\"06f541b\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24baed1 elementor-widget elementor-widget-html\" data-id=\"24baed1\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is SSL?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"SSL (Secure Sockets Layer) is a security protocol that encrypts communications between a browser and a web server. 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SSL 3.0 is obsolete, and today, TLS is primarily used to secure web connections.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why use an SSL certificate on a website?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"An SSL certificate secures transactions and data exchanges, reassures visitors, and improves a website\u2019s SEO by displaying the HTTPS protocol.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"How can I obtain an SSL certificate?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"An SSL certificate can be obtained from a Certificate Authority (CA) such as Let's Encrypt, DigiCert, or GlobalSign. There are both free and paid certificates, depending on the desired level of security and validation.\"\r\n      }\r\n    }\r\n  ]\r\n}\r\n<\/script>\r\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>SSL, or Secure Sockets Layer, is one of the initial technologies developed to secure online exchanges by establishing an encrypted connection between a user and a server. Discover its origins, how it functions, and its importance in safeguarding online data! With the widespread occurrence of online exchanges, data security has become a vital issue. Banking [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":194480,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2426],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a SSL (Secure Sockets Layer) certificate? 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