{"id":197882,"date":"2025-09-25T06:47:00","date_gmt":"2025-09-25T05:47:00","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=197882"},"modified":"2025-09-23T12:48:27","modified_gmt":"2025-09-23T11:48:27","slug":"all-about-transport-layer-security","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/all-about-transport-layer-security","title":{"rendered":"Transport Layer Security (TLS): What is it?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"197882\" class=\"elementor elementor-197882\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7b63924 e-flex e-con-boxed e-con\" data-id=\"7b63924\" 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-103425a elementor-widget elementor-widget-text-editor\" data-id=\"103425a\" 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>Since 2018, Google has mandated the use of the HTTPS protocol as the security standard for websites. Most likely, your own site has adopted this safeguard. But should you feel completely secure? Not entirely. In truth, HTTPS connections can be vulnerable if they&#8217;re not properly configured. Ideally, the TLS protection they integrate should be robust. Here is more information\u2026<\/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-da7f156 elementor-widget elementor-widget-text-editor\" data-id=\"da7f156\" 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 Internet became widely accessible to the public starting in 1995. The need to establish <\/span><b>security standards<\/b><span style=\"font-weight: 400;\"> quickly became apparent.<\/span><\/p><p><br \/><br \/><br \/><\/p><p><span style=\"font-weight: 400;\">This concern actually emerged almost 10 years earlier when <\/span><b>the Internet<\/b><span style=\"font-weight: 400;\"> was mainly used by researchers and academics. In 1986, the U.S. government formed a standards organization\u2014which later became autonomous\u2014called the <\/span><b>IETF or Internet Engineering Task Force<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">In 1999, recognizing the growing importance of the Web and the security risks it posed, the IETF developed <a href=\"https:\/\/datascientest.com\/en\/network-protocols-definition-operation-and-types\">a security protocol<\/a> named <\/span><b>TLS \u2013 Transport Layer Security<\/b><span style=\"font-weight: 400;\">. Its purpose: to <\/span><b>encrypt communications<\/b><span style=\"font-weight: 400;\"> between two systems connected to the Internet. The most recent update (TLS 1.3) was released in 2018.<\/span><\/p><p><span style=\"font-weight: 400;\">If you operate a website, it likely complies with the <\/span><b>HTTPS standard<\/b><span style=\"font-weight: 400;\">, which is built on the <\/span><a href=\"https:\/\/datascientest.com\/en\/all-about-secure-sockets-layer\"><span style=\"font-weight: 400;\">SSL encryption standard<\/span><\/a><span style=\"font-weight: 400;\">. Can you assume your website is protected from every threat? Not necessarily.<\/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-a62fc4d elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"a62fc4d\" 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 elementor-animation-grow\" 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 about safety 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-1c23445 e-flex e-con-boxed e-con\" data-id=\"1c23445\" 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-63a269d elementor-widget elementor-widget-heading\" data-id=\"63a269d\" 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\">HTTPS incorporates TLS<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0a2bb9 elementor-widget elementor-widget-text-editor\" data-id=\"b0a2bb9\" 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;\">Initially, <\/span><b>websites<\/b><span style=\"font-weight: 400;\"> followed the HTTP standard, which lacked security. <\/span><b>Data<\/b><span style=\"font-weight: 400;\"> was transferred openly from <a href=\"https:\/\/datascientest.com\/en\/all-about-proxy-servers\">a server<\/a> to a browsing device, making it relatively easy for <a href=\"https:\/\/datascientest.com\/en\/all-about-certified-ethical-hackers\">a hacker<\/a> to intercept this information, including <\/span><b>passwords<\/b><span style=\"font-weight: 400;\"> and data submitted via a <\/span><b>form<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">To make the Web more secure, the company <\/span><b>Netscape<\/b><span style=\"font-weight: 400;\">, which created the first popular <\/span><b>web browser<\/b><span style=\"font-weight: 400;\">, developed an encryption protocol called SSL. <\/span><b>Websites<\/b><span style=\"font-weight: 400;\"> using this protection were identified by the HTTPS designation. By the late 2010s, <\/span><b>Google<\/b><span style=\"font-weight: 400;\"> deemed it essential and began penalizing HTTP sites in its search engine to encourage the shift to HTTPS.<\/span><\/p><p><span style=\"font-weight: 400;\">What&#8217;s the difference between HTTPS and TLS? There&#8217;s essentially no difference. SSL and hence the HTTPS protocol incorporate the <\/span><b>TLS algorithm<\/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-fe60ea5 elementor-widget elementor-widget-image\" data-id=\"fe60ea5\" 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=\"1536\" height=\"1024\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-2.webp\" class=\"attachment-full size-full wp-image-197888\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-2.webp 1536w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-2-300x200.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-2-1024x683.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-2-768x512.webp 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\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<div class=\"elementor-element elementor-element-daf8752 elementor-widget elementor-widget-text-editor\" data-id=\"daf8752\" 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;\">In fact, HTTPS refers to implementing TLS encryption as an enhancement of the <\/span><b>HTTP protocol<\/b><span style=\"font-weight: 400;\">. Hence, a website using HTTPS indeed relies on <\/span><b>TLS encryption<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">If you&#8217;ve read our earlier points, you might feel that HTTPS might not be sufficient in all situations. Why is that? Because some <\/span><b>HTTPS implementations<\/b><span style=\"font-weight: 400;\"> still depend on the original 1999 standard, namely <\/span><b>TLS 1.0<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Therefore, it\u2019s critical to ensure that an HTTPS TLS certificate specifies <\/span><b>TLS 1.3<\/b><span style=\"font-weight: 400;\">. Why is this important?<\/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-fa44dfb e-flex e-con-boxed e-con\" data-id=\"fa44dfb\" 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-4d6ba69 elementor-widget elementor-widget-heading\" data-id=\"4d6ba69\" 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\">What is a TLS certificate?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06d4ff6 elementor-widget elementor-widget-text-editor\" data-id=\"06d4ff6\" 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;\">A website protected by HTTPS contains a TLS certificate. This certificate includes information about the domain owner and the server\u2019s public key (derived from a confidential private key), which are crucial for authenticating the server. This kind of certificate is issued by a certification authority such as Let\u2019s Encrypt, DigiCert, or GoDaddy, to a domain owner.<\/span><\/p><p><span style=\"font-weight: 400;\">You can easily check any site\u2019s certificate while browsing. Click the small icon in the address bar before a website\u2019s address. This allows you to view the server&#8217;s TLS certificate\u2014it\u2019s sometimes called an \u201cSSL certificate\u201d due to confusion regarding the names of these protocols.<\/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-f9649d6 elementor-widget elementor-widget-image\" data-id=\"f9649d6\" 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=\"1536\" height=\"1024\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-4.webp\" class=\"attachment-full size-full wp-image-197889\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-4.webp 1536w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-4-300x200.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-4-1024x683.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-4-768x512.webp 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\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<div class=\"elementor-element elementor-element-980e4ac elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"980e4ac\" 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 elementor-animation-grow\" 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\">Become a systems and network administrator<\/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-d71e123 e-flex e-con-boxed e-con\" data-id=\"d71e123\" 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-8005f60 elementor-widget elementor-widget-heading\" data-id=\"8005f60\" 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\">TLS handshake<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5e68d4 elementor-widget elementor-widget-text-editor\" data-id=\"f5e68d4\" 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;\">To better understand how the certificate functions, let\u2019s explore what happens when a connection via TLS is established between a computer and a web server.<\/span><\/p><p><span style=\"font-weight: 400;\">When you enter or select a web address in your browser, a \u201c<\/span><b>TLS handshake<\/b><span style=\"font-weight: 400;\">\u201d initiates between your computer or smartphone and the server hosting that website.<\/span><\/p><p><span style=\"font-weight: 400;\">During this handshake, your computer and the server:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Specify the <\/span><b>version of TLS<\/b><span style=\"font-weight: 400;\"> (TLS 1.0, 1.2, 1.3) being used.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Agree on the <\/span><b>encryption<\/b><span style=\"font-weight: 400;\"> that will take place in the communication session <\/span><b>between the user&#8217;s computer and the server<\/b><span style=\"font-weight: 400;\">. This encryption prevents data interception by third-parties.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Authenticate the <\/span><b>identity of the server<\/b><span style=\"font-weight: 400;\"> via its TLS certificate, meaning the server must verify its identity to the requesting computer.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Generate <\/span><a href=\"https:\/\/datascientest.com\/en\/all-about-cryptography\"><span style=\"font-weight: 400;\">cryptographic keys<\/span><\/a><span style=\"font-weight: 400;\"> that will manage the <\/span><b>encryption of the data exchanged<\/b><span style=\"font-weight: 400;\"> between both parties.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-18b042d elementor-widget elementor-widget-image\" data-id=\"18b042d\" 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=\"1536\" height=\"1024\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-1.webp\" class=\"attachment-full size-full wp-image-197890\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-1.webp 1536w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-1-300x200.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-1-1024x683.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-1-768x512.webp 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\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-78e8b30 e-flex e-con-boxed e-con\" data-id=\"78e8b30\" 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-dc64217 elementor-widget elementor-widget-heading\" data-id=\"dc64217\" 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\">What has changed with TLS 1.3?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac8a5e1 elementor-widget elementor-widget-text-editor\" data-id=\"ac8a5e1\" 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;\">As we\u2019ve mentioned, the initial handshake step involves establishing the version of TLS in use. However, versions <\/span><b>TLS 1.0 and 1.1<\/b><span style=\"font-weight: 400;\"> are now considered outdated and insufficiently secure.<\/span><\/p><p><span style=\"font-weight: 400;\">A series of attacks around 2010 highlighted vulnerabilities in the basic TLS protection. Notable attacks include:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>BEAST<\/b><span style=\"font-weight: 400;\"> (2011).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>CRIME<\/b><span style=\"font-weight: 400;\"> (2012) and <\/span><b>BREACH<\/b><span style=\"font-weight: 400;\"> (2013).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Heartbleed<\/b><span style=\"font-weight: 400;\"> (2014)<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b02b49 elementor-widget elementor-widget-text-editor\" data-id=\"3b02b49\" 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;\">Major <\/span><a href=\"https:\/\/datascientest.com\/en\/cloud-native-definition-features-benefits\"><span style=\"font-weight: 400;\">cloud platforms<\/span><\/a><span style=\"font-weight: 400;\"> have long stopped supporting TLS 1.0. The suggested version is TLS 1.3. Why?<\/span><\/p><p><br \/><span style=\"font-weight: 400;\">TLS 1.3 introduces the concept of <\/span><b>Perfect Forward Secrecy (PFS)<\/b><span style=\"font-weight: 400;\">. Each session has a temporary protection key. Even if a server&#8217;s private key is compromised, a hacker couldn&#8217;t reconstruct data from previous sessions\u2014the decryption wouldn\u2019t succeed.<\/span><\/p><p><span style=\"font-weight: 400;\">The key takeaway: ensure <\/span><b>TLS libraries<\/b><span style=\"font-weight: 400;\"> are current, especially on e-commerce sites. Tools like <\/span><b>Qualys SSL Labs<\/b><span style=\"font-weight: 400;\"> can verify this for you.<\/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-0b1d493 elementor-widget elementor-widget-image\" data-id=\"0b1d493\" 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=\"1536\" height=\"1024\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-3.webp\" class=\"attachment-full size-full wp-image-197891\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-3.webp 1536w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-3-300x200.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-3-1024x683.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/07\/Transport-Layer-Security-DataScientest-3-768x512.webp 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\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<div class=\"elementor-element elementor-element-e0d4bfa elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"e0d4bfa\" 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 elementor-animation-grow\" 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 training 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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-10fde9d e-flex e-con-boxed e-con\" data-id=\"10fde9d\" 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-40cdd52 elementor-widget elementor-widget-html\" data-id=\"40cdd52\" 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\": \"Transport Layer Security (TLS): What is it?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"TLS is a security protocol developed by the IETF to encrypt internet communications between systems, ensuring confidentiality and data integrity.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"HTTPS incorporates TLS\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"HTTPS is the secure version of HTTP, which integrates TLS encryption to protect data transmitted between a browser and a web server.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is a TLS certificate?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"A TLS certificate authenticates a server\u2019s identity and contains its public key. It's issued by a certification authority and enables secure HTTPS connections.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"TLS handshake\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"A TLS handshake is a process where the browser and server agree on encryption methods, authenticate the server, and generate cryptographic keys for the session.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What has changed with TLS 1.3\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"TLS 1.3 improves security with Perfect Forward Secrecy, reducing risks from past attacks and preventing decryption even if a private key is compromised.\"\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>Since 2018, Google has mandated the use of the HTTPS protocol as the security standard for websites. Most likely, your own site has adopted this safeguard. But should you feel completely secure? Not entirely. In truth, HTTPS connections can be vulnerable if they&#8217;re not properly configured. Ideally, the TLS protection they integrate should be robust. [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":197884,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2426,2422],"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>Transport Layer Security (TLS): What is it?<\/title>\n<meta name=\"description\" content=\"Discover how the TLS protocol ensures the security of your HTTPS connections, why it is essential to use TLS 1.3, and how to verify if your site is truly protected.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/datascientest.com\/en\/all-about-transport-layer-security\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Transport Layer Security (TLS): What is it?\" \/>\n<meta property=\"og:description\" content=\"Since 2018, Google has mandated the use of the HTTPS protocol as the security standard for websites. 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