{"id":6295,"date":"2025-07-15T14:22:20","date_gmt":"2025-07-15T12:22:20","guid":{"rendered":"https:\/\/blog.keitaro.io\/en\/?p=6295"},"modified":"2025-09-16T17:31:39","modified_gmt":"2025-09-16T15:31:39","slug":"everything-you-need-to-know-about-ssl-tls-certificates-before-google-gets-stricter","status":"publish","type":"post","link":"https:\/\/blog.keitaro.io\/en\/everything-you-need-to-know-about-ssl-tls-certificates-before-google-gets-stricter\/","title":{"rendered":"Everything You Need to Know About SSL\/TLS Certificates (Before Google Gets Stricter)"},"content":{"rendered":"\n<p>Let\u2019s talk about something that quietly powers the internet every single day: SSL\/TLS certificates. You\u2019ve seen that little padlock icon in your browser\u2019s address bar? That\u2019s them at work. They protect your passwords, credit card details, and personal information. They also tell your browser, \u201cYes, this site is legit.\u201d<\/p>\n\n\n\n<p>But here&#8217;s the twist: <a href=\"https:\/\/www.computerworld.com\/article\/4018233\/google-finally-gets-strict-about-web-server-certificates.html\">Google is tightening the rules<\/a> on how these certificates are issued and used. Starting in June 2026, Chrome will get a lot stricter about what qualifies as a valid server certificate. That means if your site\u2019s certificates are misconfigured or used for anything other than TLS web server authentication, you could end up flagged as \u201cuntrusted.\u201d<\/p>\n\n\n\n<p>So, let\u2019s break down what SSL\/TLS certificates actually are, how they work, and why this change from Google means it\u2019s time to get serious about how you secure your site.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Wait, What\u2019s an SSL\/TLS Certificate?<\/h2>\n\n\n\n<p>SSL stands for Secure Sockets Layer, and TLS stands for Transport Layer Security, but here\u2019s the thing: SSL is dead. Seriously. All versions of SSL have been deprecated for years due to security flaws. These days, everything runs on TLS.<\/p>\n\n\n\n<p>So why do we still say \u201cSSL certificates\u201d? Habit, mostly. It\u2019s like calling a car radio a \u201ctape deck.\u201d The name stuck. But when you buy an \u201cSSL certificate,\u201d what you\u2019re really getting is a TLS certificate.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXfQpdqZXpgHvcZWiNcqpT-BVXqUOzJtacPr2b-NMNFm9wIsPlLm0m1XeGIWyH1uVum66yDF17uHTtPlY3OsyMUyfapmWUQSAWBfxiBpXNsjYNA0MQOCliyXiF2flxW0kryppBoA?key=MlPloaOgCGmNd3d8fvYg8w\" alt=\"SSL vs TLS: What\u2019s the difference?\"\/><figcaption class=\"wp-element-caption\"><em>SSL vs TLS: What\u2019s the difference?<\/em><\/figcaption><\/figure>\n\n\n\n<p>In short:<br>&#8211; It\u2019s a digital certificate that authenticates your website and enables encrypted HTTPS connections.<br>&#8211; Without it, data sent to and from your site can be intercepted or tampered with.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Do These SSL Certificates Work?<\/h2>\n\n\n\n<p>Let\u2019s say someone visits your website. Here\u2019s what happens:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Your site shows its certificate to the visitor\u2019s browser.<\/li>\n\n\n\n<li>The browser checks if it\u2019s from a trusted Certificate Authority (CA).<\/li>\n\n\n\n<li>If all\u2019s good, the browser and server exchange keys and create an encrypted connection.<\/li>\n<\/ol>\n\n\n\n<p>It happens in milliseconds, but it\u2019s essential for keeping users safe and building trust.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXemOiLNzfS7aIZpeNVQvg2GXxfxO1QYplRR-muSphOy0JqOJwQQojKK9GCx0-3oFz3oNXjOp3LJvvgp57OgAqRRPKyuwYucQ3mZQa913lg1532dYE8ZCQpgHYnF3SfKytHzFvhqTQ?key=MlPloaOgCGmNd3d8fvYg8w\" alt=\"What\u2019s inside an SSL\/TLS certificate?\"\/><figcaption class=\"wp-element-caption\"><em>What\u2019s inside an SSL\/TLS certificate?<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Types of SSL\/TLS Certificates You Might Be Using<\/h2>\n\n\n\n<p>SSL\/TLS certificates vary by two main factors: how thoroughly the requester is validated (validation level) and what domain scope the certificate covers (coverage). Understanding both is key to choosing the right certificate for your needs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">By Validation Level (How your identity is verified)<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Domain Validation (DV)<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>What it is<\/strong><\/td><td>The most basic type of certificate. The Certificate Authority (CA) only verifies that the requester controls the domain name, typically through DNS records or email confirmation.<\/td><\/tr><tr><td><strong>Issuance speed<\/strong><\/td><td>A few minutes to a few hours.<\/td><\/tr><tr><td><strong>Browser display<\/strong><\/td><td>Shows the padlock and HTTPS, but no information about who owns the site.<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Personal sites, small blogs, temporary landing pages, internal tools.<\/td><\/tr><tr><td><strong>Pros<\/strong><\/td><td>Fast, easy, and often free (e.g., Let\u2019s Encrypt).<\/td><\/tr><tr><td><strong>Cons<\/strong><\/td><td>Provides no visible proof of who owns the site, which can lead to misuse by phishing or scam sites.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Organization Validation (OV)<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>What it is<\/strong><\/td><td>Verifies domain ownership and the legal existence of the organization requesting the certificate. The CA checks company registration details, physical address, and phone number.<\/td><\/tr><tr><td><strong>Issuance speed<\/strong><\/td><td>Typically 1\u20133 business days.<\/td><\/tr><tr><td><strong>Browser display<\/strong><\/td><td>Users can view the organization name by clicking on the padlock.<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Business websites, SaaS platforms, or nonprofits wanting a higher trust level.<\/td><\/tr><tr><td><strong>Pros<\/strong><\/td><td>Stronger assurance and legitimacy than DV.<\/td><\/tr><tr><td><strong>Cons<\/strong><\/td><td>Slightly more complex process and more expensive than DV, with less visual distinction in modern browsers.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Extended Validation (EV)<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>What it is<\/strong><\/td><td>The most rigorous certificate type. The CA performs a comprehensive vetting process, including company registration, operational existence, physical location, and authority of the requestor.<\/td><\/tr><tr><td><strong>Issuance speed<\/strong><\/td><td>Up to 5 business days.<\/td><\/tr><tr><td><strong>Browser display<\/strong><\/td><td>Previously showed the organization name directly in the address bar, though modern browsers now often hide this by default.<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Financial institutions, healthcare providers, e-commerce platforms, or any service where trust is mission-critical.<\/td><\/tr><tr><td><strong>Pros<\/strong><\/td><td>Maximum assurance and trust; provides strong protection against spoofing.<\/td><\/tr><tr><td><strong>Cons<\/strong><\/td><td>Higher cost, more paperwork, and reduced visual emphasis in most current browsers.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXchos5CN1IIYJilu4bioLhvxvG1UjK2iWBKnjjI1QqDhSbcddgK9zLVsBnVzGh8-EBwzRw--bIoowvmsf2IUVgskBIU4zBIzKyMhe8OdwZGLrw5ZNbhdb_kMbc8iBFas5U22qRmkw?key=MlPloaOgCGmNd3d8fvYg8w\" alt=\"ssl\/tls certificates types\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">By Coverage (What the certificate protects)<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Single-Domain Certificate<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Coverage<\/strong><\/td><td>One domain only, such as example.com or www.example.com (not both unless specified).<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Sites with a single domain and no subdomains.<\/td><\/tr><tr><td><strong>Pros<\/strong><\/td><td>Simple and affordable.<\/td><\/tr><tr><td><strong>Cons<\/strong><\/td><td>Does not cover subdomains or additional domains.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Wildcard Certificate<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Coverage<\/strong><\/td><td>One domain and all subdomains at one level. For example, *.example.com covers mail.example.com, shop.example.com, etc.<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Businesses using multiple subdomains under one primary domain.<\/td><\/tr><tr><td><strong>Pros<\/strong><\/td><td>Cost-effective and easier to manage than multiple single-domain certs.<\/td><\/tr><tr><td><strong>Cons<\/strong><\/td><td>Does not cover multiple domains or second-level subdomains like <em>sub.mail.example.com<\/em>.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Multi-Domain Certificate (SAN Certificate)<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Coverage<\/strong><\/td><td>Multiple domains and subdomains specified individually using Subject Alternative Names (SANs). For example: <em>example.com, example.org<\/em>, and <em>shop.example.net<\/em>.<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Organizations managing multiple brands or services under different domain names.<\/td><\/tr><tr><td><strong>Pros<\/strong><\/td><td>Reduces the complexity and cost of managing separate certificates.<\/td><\/tr><tr><td><strong>Cons<\/strong><\/td><td>Updating domain names requires reissuing the certificate, which can disrupt service if not carefully managed.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">6 Best Practices for SSL\/TLS Certificates (2025 &amp; Beyond)<\/h2>\n\n\n\n<p>If you want to keep your website secure, trusted, and compliant, especially with Google\u2019s upcoming stricter rules, these are the 6 fundamentals you need to get right:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Use Only TLS 1.2 or TLS 1.3<\/h3>\n\n\n\n<p>Older versions like SSL 3.0, TLS 1.0, and TLS 1.1 are no longer considered secure and are blocked by modern browsers. Make sure to disable older protocols on your server to reduce vulnerability exposure.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>TLS 1.2<\/strong> is widely supported and still reliable.<\/li>\n\n\n\n<li><strong>TLS 1.3<\/strong>, introduced in 2018, is faster and more secure with simplified handshakes and removal of outdated algorithms.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Set Up Auto-Renewal for Certificates<\/h3>\n\n\n\n<p>An expired certificate means instant loss of user trust and browser warnings.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Most major providers (Let\u2019s Encrypt, AWS, Cloudflare) support automatic renewals.<\/li>\n\n\n\n<li>Set up monitoring or alerts to verify that renewals are happening correctly.<\/li>\n<\/ul>\n\n\n\n<p>If, for some reason, you still prefer manual certs, create calendar reminders at least 30 days before expiration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Redirect All HTTP Traffic to HTTPS<\/h3>\n\n\n\n<p>Having an HTTPS certificate isn\u2019t enough; you need to make sure all traffic is encrypted.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Set up 301 or 308 redirects at the server level to route all HTTP URLs to their HTTPS counterparts.<\/li>\n\n\n\n<li>Use canonical tags and update internal links to HTTPS versions.<\/li>\n<\/ul>\n\n\n\n<p>This also helps your SEO by avoiding duplicate content across protocols.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Eliminate Mixed Content<\/h3>\n\n\n\n<p>Mixed content means loading secure (HTTPS) pages with insecure (HTTP) resources like images, scripts, or fonts.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>This breaks the secure padlock icon and may block the content from loading entirely.<\/li>\n\n\n\n<li>Use browser dev tools to identify mixed content and update links to HTTPS.<\/li>\n<\/ul>\n\n\n\n<p>Always use relative paths or HTTPS versions for external assets.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Enable HTTP Strict Transport Security (HSTS)<\/h3>\n\n\n\n<p>HSTS is a response header that tells browsers: \u201cOnly use HTTPS for this domain.\u201d<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It prevents protocol downgrade attacks and ensures future visits are secure.<\/li>\n\n\n\n<li>You can preload your domain into the <a href=\"https:\/\/hstspreload.org\/\">HSTS preload list<\/a> for maximum protection.<\/li>\n<\/ul>\n\n\n\n<p>&nbsp;Start with short <em>max-age<\/em> values to test before committing to long-term enforcement.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Audit Your Certificates Regularly<\/h3>\n\n\n\n<p>Especially important if you&#8217;re managing multiple domains, subdomains, or services.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Verify all certs are properly scoped (no unnecessary EKUs, correct CN and SAN fields).<\/li>\n\n\n\n<li>Remove expired, duplicate, or unused certificates.<\/li>\n\n\n\n<li>Check for wildcard overuse. Sometimes it\u2019s better to separate certs by service.<\/li>\n<\/ul>\n\n\n\n<p>Use tools like SSL Labs\u2019 SSL Server Test or CertSpotter to track certificate health.<\/p>\n\n\n\n<p>Following these steps ensures that your site won\u2019t just meet minimum <a href=\"https:\/\/blog.keitaro.io\/en\/ultimate-internet-safety-checklist-for-media-buyers-and-advertising-pros\/\" title=\"\">security<\/a> requirements. It will be ready for upcoming changes like Google\u2019s 2026 SSL\/TLS policy shift and earn long-term trust from users and browsers alike.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Let\u2019s talk about something that quietly powers the internet every single day: SSL\/TLS certificates. You\u2019ve seen &hellip; <\/p>\n","protected":false},"author":19,"featured_media":6296,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[95,108],"tags":[],"class_list":["post-6295","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digital-marketing","category-guide"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"Let\u2019s talk about something that quietly powers the internet every single day: SSL\/TLS certificates. You\u2019ve seen that little padlock icon in your browser\u2019s address bar? That\u2019s them at work. 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