{"id":3964,"date":"2026-11-03T09:30:00","date_gmt":"2026-11-03T09:30:00","guid":{"rendered":"https:\/\/potenting.com\/fi\/blog\/how-ssl-tls-certificates-protect-your-website\/"},"modified":"2026-11-03T11:52:22","modified_gmt":"2026-11-03T11:52:22","slug":"how-ssl-tls-certificates-protect-your-website-fi","status":"publish","type":"post","link":"https:\/\/potenting.com\/fi\/blog\/how-ssl-tls-certificates-protect-your-website\/","title":{"rendered":"Miten SSL\/TLS-varmenteet suojaavat verkkosivustoasi?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3964\" class=\"elementor elementor-3964\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5ae7d9e e-flex e-con-boxed e-con e-parent\" data-id=\"5ae7d9e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e4aa40 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"0e4aa40\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;T\\u00e4lt\\u00e4 sivulta ei l\\u00f6ytynyt otsikoita.&quot;,&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tSis\u00e4llysluettelo\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__0e4aa40\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__0e4aa40\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__0e4aa40\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\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-991bcac e-flex e-con-boxed e-con e-parent\" data-id=\"991bcac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-92189de elementor-widget elementor-widget-text-editor\" data-id=\"92189de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Nyky\u00e4\u00e4n internetin k\u00e4ytt\u00e4j\u00e4t pit\u00e4v\u00e4t tietoturvaa eritt\u00e4in t\u00e4rke\u00e4n\u00e4. Jos he huomaavat, ett\u00e4 verkkosivusto tai sovellus voi vaarantaa heid\u00e4n tietoturvansa, he tuskin k\u00e4ytt\u00e4v\u00e4t sit\u00e4. SSL- ja TLS-protokollat kehitettiin parantamaan tietoturvaa salaamalla tietoja ja auttamalla suojaamaan k\u00e4ytt\u00e4jien tietoja.<\/p>\t\t\t\t\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-3d33b1a e-flex e-con-boxed e-con e-parent\" data-id=\"3d33b1a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b1afc24 elementor-widget elementor-widget-text-editor\" data-id=\"b1afc24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Mik\u00e4 on SSL (Secure Sockets Layer)?<\/h2><p>Vuonna 1990 kehitettiin protokolla, jonka tarkoituksena oli parantaa internetin tietoturvaa salaamalla tietoja ja v\u00e4hent\u00e4m\u00e4ll\u00e4 riski\u00e4 siit\u00e4, ett\u00e4 asiattomat henkil\u00f6t p\u00e4\u00e4sev\u00e4t niihin k\u00e4siksi. Ennen SSL:n k\u00e4ytt\u00f6\u00f6nottoa verkkopalvelimien ja selainten v\u00e4linen tiedonsiirto oli altis monenlaisille tietoturvauhille. Protokollan my\u00f6t\u00e4 sen k\u00e4yt\u00f6st\u00e4 tuli v\u00e4hitellen tietoturvastandardi, ja monet yritykset ottivat sen k\u00e4ytt\u00f6\u00f6n suojatakseen k\u00e4ytt\u00e4jiens\u00e4 yksityisyytt\u00e4.<\/p><p>Vaikka SSL vaikutti aluksi tehokkaalta ratkaisulta, siin\u00e4 oli useita puutteita ja rajoituksia, joiden vuoksi sit\u00e4 ei voitu pit\u00e4\u00e4 t\u00e4ysin luotettavana protokollana.<\/p><p>Esimerkiksi vuonna 2014 SSL 3.0:sta l\u00f6ydettiin merkitt\u00e4v\u00e4 haavoittuvuus, jonka avulla hakkerit saattoivat p\u00e4\u00e4st\u00e4 j\u00e4rjestelmiin luvatta. T\u00e4m\u00e4n seurauksena kehitt\u00e4j\u00e4t alkoivat etsi\u00e4 turvallisempaa ja luotettavampaa vaihtoehtoa.<\/p>\t\t\t\t\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-efe6d95 e-flex e-con-boxed e-con e-parent\" data-id=\"efe6d95\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e987aa1 elementor-widget elementor-widget-text-editor\" data-id=\"e987aa1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Mik\u00e4 on Transport Layer Security (TLS)?<\/h2><p>TLS kehitettiin korjaamaan SSL:n puutteet ja korvaamaan se. Vuonna 1999 esitelty protokolla tarjosi paremman suorituskyvyn ja turvallisemmat yhteydet, ja siit\u00e4 tuli lopulta alan standardi. TLS:ll\u00e4 on sama tarkoitus kuin SSL:ll\u00e4: verkkoselainten ja palvelimien v\u00e4lisen tiedonsiirron suojaaminen. Koska se kuitenkin tarjoaa huomattavasti vahvemman suojaustason, vanhentuneiden tai turvattomien protokollien k\u00e4ytt\u00e4minen TLS:n sijaan voi altistaa j\u00e4rjestelm\u00e4t tietoturvariskeille.<\/p>\t\t\t\t\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-815ce49 e-flex e-con-boxed e-con e-parent\" data-id=\"815ce49\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a09bb9a elementor-widget elementor-widget-text-editor\" data-id=\"a09bb9a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>SSL:n ja TLS:n vertailu<\/h2><p>SSL:ll\u00e4 ja TLS:ll\u00e4 on sama tarkoitus: internetiss\u00e4 tapahtuvan tiedonsiirron suojaaminen. Ne kuitenkin eroavat toisistaan toimintatavaltaan ja tarjoamaltaan suojaustasolta.<\/p><ul><li><h3>SSL:n ja TLS:n keskeiset erot<\/h3><ul><li><span style=\"color: #cb5c48;\">Salaus:<\/span> TLS k\u00e4ytt\u00e4\u00e4 vahvempia ja kehittyneempi\u00e4 salausalgoritmeja ja -tekniikoita. Se tukee AES-salausta tietojen salaamiseen ja HMAC:t\u00e4 viestien eheyden varmistamiseen, mik\u00e4 tekee siit\u00e4 turvallisemman kuin edelt\u00e4j\u00e4ns\u00e4 SSL.<\/li><li><span style=\"color: #cb5c48;\">Vahvempi todennus:<\/span> TLS k\u00e4ytt\u00e4\u00e4 kehittyneempi\u00e4 menetelmi\u00e4 viestivien osapuolten henkil\u00f6llisyyden varmentamiseen, mik\u00e4 v\u00e4hent\u00e4\u00e4 v\u00e4liintulohy\u00f6kk\u00e4ysten (MITM) riski\u00e4. Sen k\u00e4ttelyprosessi sis\u00e4lt\u00e4\u00e4 my\u00f6s turvallisempia todennusmekanismeja.<\/li><li><span style=\"color: #cb5c48;\">Parempi suorituskyky ja nopeus:<\/span> TLS optimoi suojattujen yhteyksien muodostamisen ja v\u00e4hent\u00e4\u00e4 tiedonsiirron ylim\u00e4\u00e4r\u00e4ist\u00e4 kuormaa. T\u00e4m\u00e4 voi nopeuttaa k\u00e4ttely\u00e4 ja lyhent\u00e4\u00e4 yhteyden viivett\u00e4, mik\u00e4 tekee TLS:st\u00e4 sopivamman nykyaikaisiin verkkosovelluksiin.<\/li><\/ul><\/li><li><h3>SSL:n ja TLS:n yht\u00e4l\u00e4isyydet<\/h3><ul><li><span style=\"color: #cb5c48;\">Tietojen salaus:<\/span> Molemmat protokollat on suunniteltu salaamaan tietoja ja muodostamaan suojattuja yhteyksi\u00e4 verkkoselainten ja palvelimien v\u00e4lille. TLS on uudempi protokolla, joka kehitettiin korjaamaan SSL:n tietoturvaheikkoudet.<\/li><li><span style=\"color: #cb5c48;\">Terminologia:<\/span> Vaikka SSL on poistettu k\u00e4yt\u00f6st\u00e4, termi\u00e4 k\u00e4ytet\u00e4\u00e4n edelleen yleisesti viittaamaan TLS-yhteyksiin ja -varmenteisiin.<\/li><li><span style=\"color: #cb5c48;\">Tarkoitus:<\/span> Molempien protokollien tavoitteena on suojata tietoja niiden siirtyess\u00e4 verkon yli. Ne hy\u00f6dynt\u00e4v\u00e4t suojausmekanismeja todennuksen tukemiseen ja salattujen yhteyksien muodostamiseen.<\/li><li><span style=\"color: #cb5c48;\">K\u00e4ytt\u00f6 HTTPS:ss\u00e4:<\/span> HTTPS k\u00e4ytt\u00e4\u00e4 TLS:\u00e4\u00e4 selaimen ja verkkopalvelimen v\u00e4lisen tiedonsiirron suojaamiseen. `https:\/\/` osoiterivill\u00e4 kertoo, ett\u00e4 sivusto k\u00e4ytt\u00e4\u00e4 salattua yhteytt\u00e4.<\/li><\/ul><\/li><\/ul>\t\t\t\t\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-05808d6 e-flex e-con-boxed e-con e-parent\" data-id=\"05808d6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cbb72bf elementor-widget elementor-widget-html\" data-id=\"cbb72bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n  .ssl-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    margin: 25px 0;\n    border-radius: 10px;\n    border: 1px solid #E8D8D4;\n  }\n\n  .ssl-comparison-table {\n    width: 100%;\n    min-width: 550px;\n    border-collapse: collapse;\n    text-align: left;\n    font-size: 15px;\n    line-height: 1.7;\n    background-color: #FFFFFF;\n  }\n\n  .ssl-comparison-table thead {\n    background-color: #CB5C48;\n    color: #FFFFFF;\n  }\n\n  .ssl-comparison-table th {\n    padding: 15px;\n    font-weight: 600;\n    text-align: left;\n  }\n\n  .ssl-comparison-table td {\n    padding: 13px 15px;\n    border-bottom: 1px solid #F0E4E1;\n    color: #444444;\n  }\n\n  .ssl-comparison-table tbody tr:nth-child(even) {\n    background-color: #FFF5F2;\n  }\n\n  .ssl-comparison-table tbody tr:hover {\n    background-color: #FBE8E3;\n  }\n\n  .ssl-comparison-table tbody tr:last-child td {\n    border-bottom: none;\n  }\n\n  @media (max-width: 600px) {\n    .ssl-comparison-table {\n      font-size: 14px;\n    }\n\n    .ssl-comparison-table th,\n    .ssl-comparison-table td {\n      padding: 10px;\n    }\n  }\n<\/style>\n\n<div class=\"ssl-table-wrapper\">\n  <table class=\"ssl-comparison-table\">\n    <thead>\n      <tr>\n        <th>Comparison Criteria<\/th>\n        <th>SSL<\/th>\n        <th>TLS<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Security Status<\/td>\n        <td>Deprecated and insecure<\/td>\n        <td>Modern and more secure standard<\/td>\n      <\/tr>\n      <tr>\n        <td>Encryption Algorithms<\/td>\n        <td>Uses outdated and weak algorithms<\/td>\n        <td>Supports modern encryption algorithms<\/td>\n      <\/tr>\n      <tr>\n        <td>Authentication<\/td>\n        <td>Uses older mechanisms<\/td>\n        <td>Uses improved authentication mechanisms<\/td>\n      <\/tr>\n      <tr>\n        <td>Performance and Speed<\/td>\n        <td>Has security and technical limitations<\/td>\n        <td>Optimized for modern communications<\/td>\n      <\/tr>\n      <tr>\n        <td>Handshake Process<\/td>\n        <td>Older process with security weaknesses<\/td>\n        <td>Improved and more efficient process<\/td>\n      <\/tr>\n      <tr>\n        <td>Resistance to Attacks<\/td>\n        <td>Vulnerable to various attacks<\/td>\n        <td>Provides stronger protection against known attacks<\/td>\n      <\/tr>\n      <tr>\n        <td>Use in HTTPS<\/td>\n        <td>Should no longer be used<\/td>\n        <td>Used to secure HTTPS communications<\/td>\n      <\/tr>\n      <tr>\n        <td>Browser Support<\/td>\n        <td>Older SSL versions are no longer supported<\/td>\n        <td>Modern TLS versions are supported<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n<\/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-996da9b e-flex e-con-boxed e-con e-parent\" data-id=\"996da9b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8765338 elementor-widget elementor-widget-text-editor\" data-id=\"8765338\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Miksi SSL poistettiin k\u00e4yt\u00f6st\u00e4?<\/h2><p>SSL:n poistaminen k\u00e4yt\u00f6st\u00e4 oli v\u00e4ltt\u00e4m\u00e4t\u00f6n tietoturvatoimenpide. Heikot salausalgoritmit, alttius erilaisille hy\u00f6kk\u00e4yksille, kuten v\u00e4liintulohy\u00f6kk\u00e4yksille (MITM), sek\u00e4 kyvytt\u00f6myys t\u00e4ytt\u00e4\u00e4 nykyaikaisia tietoturvavaatimuksia tekiv\u00e4t protokollasta vanhentuneen ja ep\u00e4luotettavan.<\/p><p>Lis\u00e4ksi nykyaikaiset verkkoselaimet eiv\u00e4t en\u00e4\u00e4 tue SSL:n vanhoja versioita. Ne saattavat my\u00f6s n\u00e4ytt\u00e4\u00e4 k\u00e4ytt\u00e4jille tietoturvavaroituksia, kun n\u00e4m\u00e4 vierailevat sivustoilla, jotka k\u00e4ytt\u00e4v\u00e4t n\u00e4it\u00e4 vanhentuneita protokollia.<\/p><h3>Miksi termi\u00e4 SSL k\u00e4ytet\u00e4\u00e4n yh\u00e4?<\/h3><p>Vaikka SSL on poistettu k\u00e4yt\u00f6st\u00e4, termi\u00e4 k\u00e4ytet\u00e4\u00e4n yh\u00e4 laajalti salausprotokollista puhuttaessa. Vaikka TLS:st\u00e4 on tullut verkkoviestinn\u00e4n suojaamisen standardi, monet kutsuvat sit\u00e4 tottumuksesta edelleen SSL:ksi.<\/p><p>On kuitenkin t\u00e4rke\u00e4\u00e4 ymm\u00e4rt\u00e4\u00e4, ett\u00e4 SSL itsess\u00e4\u00e4n on vanhentunut eik\u00e4 sit\u00e4 en\u00e4\u00e4 tueta. Kun nyky\u00e4\u00e4n kuulet termin \u201dSSL-varmenne\u201d, sill\u00e4 tarkoitetaan yleens\u00e4 TLS:n kanssa k\u00e4ytett\u00e4v\u00e4\u00e4 varmennetta, vaikka nime\u00e4 SSL k\u00e4ytet\u00e4\u00e4n edelleen yleisesti.<\/p>\t\t\t\t\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-e98ec50 e-flex e-con-boxed e-con e-parent\" data-id=\"e98ec50\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45df1e5 elementor-widget elementor-widget-text-editor\" data-id=\"45df1e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Mik\u00e4 on TLS-varmenteiden tulevaisuus?<\/h2><p>Tulevaisuudessa TLS parantaa tiedonsiirron tietoturvaa p\u00e4ivitt\u00e4m\u00e4ll\u00e4 salausalgoritmeja ja ottamalla k\u00e4ytt\u00f6\u00f6n kvanttikest\u00e4vi\u00e4 menetelmi\u00e4. Toisaalta varmenteiden voimassaoloaikojen lyhent\u00e4minen 47 p\u00e4iv\u00e4\u00e4n parantaa tietoturvaa, mutta tekee varmenteiden hallinnasta ja oikea-aikaisesta uusimisesta haastavampaa.<\/p><p>T\u00e4m\u00e4n vuoksi automatisoidut ty\u00f6kalut ja protokollat, kuten ACME, ovat yh\u00e4 t\u00e4rke\u00e4mpi\u00e4 varmenteiden hallinnassa, vanhenemisen est\u00e4misess\u00e4 ja palvelukatkosten v\u00e4ltt\u00e4misess\u00e4.<\/p>\t\t\t\t\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-dfaf07e e-flex e-con-boxed e-con e-parent\" data-id=\"dfaf07e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec58a72 elementor-widget elementor-widget-text-editor\" data-id=\"ec58a72\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Kannattaako TLS-varmennetta k\u00e4ytt\u00e4\u00e4?<\/h2><p>Kyll\u00e4, ehdottomasti. Jos haluat kasvattaa liiketoimintaasi ja rakentaa luottamusta k\u00e4ytt\u00e4jiisi, TLS:n k\u00e4ytt\u00f6 on v\u00e4ltt\u00e4m\u00e4t\u00f6nt\u00e4.<\/p><p>Vaikka jotkin sivustot toimivat yh\u00e4 ilman salausprotokollia, selaimet, kuten Google Chrome, n\u00e4ytt\u00e4v\u00e4t tietoturvavaroituksia k\u00e4ytt\u00e4jien vieraillessa niill\u00e4. T\u00e4m\u00e4n seurauksena k\u00e4ytt\u00e4j\u00e4t eiv\u00e4t v\u00e4ltt\u00e4m\u00e4tt\u00e4 luota sivustoihin tai jatka niiden k\u00e4ytt\u00f6\u00e4, mik\u00e4 voi heikent\u00e4\u00e4 sivuston mainetta ja yleist\u00e4 menestyst\u00e4.<\/p><p>Pysy\u00e4ksesi kilpailukykyisen\u00e4 ja menesty\u00e4ksesi verkossa sivustosi tarvitsee TLS-varmenteen tiedonsiirron suojaamiseen ja luottamuksen rakentamiseen k\u00e4ytt\u00e4jien kanssa.<\/p>\t\t\t\t\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-e22fdb9 e-flex e-con-boxed e-con e-parent\" data-id=\"e22fdb9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f2d6651 elementor-widget elementor-widget-html\" data-id=\"f2d6651\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<div class=\"potenting-ssl-cta\">\n  <div class=\"potenting-ssl-cta__top\">\n    <span class=\"potenting-ssl-cta__icon\" aria-hidden=\"true\">\n      &#128274;\n    <\/span>\n    <span class=\"potenting-ssl-cta__label\">\n      WEBSITE SECURITY \u00b7 SSL\/TLS\n    <\/span>\n  <\/div>\n\n  <h3>Secure Your Website. Build Trust.<\/h3>\n\n  <p>\n    Protect your website and your visitors with the right\n    SSL certificate. Explore trusted solutions for encrypted\n    connections, stronger security, and greater customer confidence.\n  <\/p>\n\n  <a\n    class=\"potenting-ssl-cta__button\"\n    href=\"\/fi\/webhosting\/ssl\/\"\n    target=\"_blank\"\n    rel=\"noopener noreferrer\"\n  >\n    Explore SSL Certificates\n    \n  <\/a>\n\n  <div class=\"potenting-ssl-cta__accent\"><\/div>\n<\/div>\n\n<style>\n.potenting-ssl-cta {\n  --cta-coral: #CB5C48;\n  --cta-navy: #101D32;\n  --cta-teal: #77D8C7;\n\n  position: relative;\n  overflow: hidden;\n  box-sizing: border-box;\n  margin: 32px 0;\n  padding: 30px;\n  border: 1px solid rgba(203, 92, 72, 0.25);\n  border-radius: 18px;\n  background:\n    radial-gradient(\n      circle at 100% 0%,\n      rgba(119, 216, 199, 0.14),\n      transparent 36%\n    ),\n    linear-gradient(135deg, #101D32 0%, #1C3048 100%);\n  color: #F7FAFC;\n  font-family: inherit;\n  box-shadow: 0 12px 30px rgba(16, 29, 50, 0.12);\n}\n\n.potenting-ssl-cta__top {\n  display: flex;\n  align-items: center;\n  gap: 12px;\n  margin-bottom: 18px;\n}\n\n.potenting-ssl-cta__icon {\n  display: grid;\n  place-items: center;\n  flex: 0 0 46px;\n  width: 46px;\n  height: 46px;\n  border-radius: 13px;\n  background: var(--cta-coral);\n  font-size: 23px;\n}\n\n.potenting-ssl-cta__label {\n  color: var(--cta-teal);\n  font-size: 11px;\n  font-weight: 700;\n  letter-spacing: 1.5px;\n}\n\n.potenting-ssl-cta h3 {\n  margin: 0 0 12px;\n  color: #FFFFFF;\n  font-size: clamp(22px, 3vw, 30px);\n  line-height: 1.3;\n  font-weight: 750;\n}\n\n.potenting-ssl-cta p {\n  max-width: 650px;\n  margin: 0 0 24px;\n  color: #D5DFE9;\n  font-size: 15px;\n  line-height: 1.9;\n}\n\n.potenting-ssl-cta__button {\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  gap: 12px;\n  box-sizing: border-box;\n  max-width: 100%;\n  padding: 13px 20px;\n  border: 1px solid var(--cta-coral);\n  border-radius: 10px;\n  background: var(--cta-coral);\n  color: #FFFFFF !important;\n  font-size: 14px;\n  font-weight: 700;\n  line-height: 1.5;\n  text-decoration: none !important;\n  transition:\n    background 0.2s ease,\n    border-color 0.2s ease,\n    transform 0.2s ease;\n}\n\n.potenting-ssl-cta__button:hover {\n  background: #AD4938;\n  border-color: #AD4938;\n  color: #FFFFFF !important;\n  transform: translateY(-2px);\n}\n\n.potenting-ssl-cta__accent {\n  position: absolute;\n  right: 0;\n  bottom: 0;\n  left: 0;\n  height: 5px;\n  background: linear-gradient(\n    90deg,\n    #CB5C48 0%,\n    #E99A69 48%,\n    #77D8C7 100%\n  );\n}\n\n@media (max-width: 600px) {\n  .potenting-ssl-cta {\n    padding: 22px 18px;\n    border-radius: 14px;\n  }\n\n  .potenting-ssl-cta__label {\n    font-size: 10px;\n    letter-spacing: 1px;\n  }\n\n  .potenting-ssl-cta__button {\n    display: flex;\n    width: 100%;\n  }\n}\n\n@media (prefers-reduced-motion: reduce) {\n  .potenting-ssl-cta__button {\n    transition: none;\n  }\n}\n<\/style>\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-662ce8d e-flex e-con-boxed e-con e-parent\" data-id=\"662ce8d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-afbf846 elementor-widget elementor-widget-text-editor\" data-id=\"afbf846\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Yhteenveto: kuinka kauan SSL-varmenne on voimassa?<\/h2><p>SSL\/TLS-varmenteen voimassaoloaika tarkoittaa aikaa, jonka varmenne pysyy kelvollisena tiedonsiirron suojaamiseen. T\u00e4ll\u00e4 hetkell\u00e4 enimm\u00e4isvoimassaoloaika on 398 p\u00e4iv\u00e4\u00e4. Aika kuitenkin lyhenee v\u00e4hitellen maaliskuusta 2026 alkaen, ja maaliskuuhun 2029 menness\u00e4 se on 47 p\u00e4iv\u00e4\u00e4.<\/p><p>Muutoksen tavoitteena on parantaa tietoturvaa, v\u00e4hent\u00e4\u00e4 salausavainten paljastumisen riski\u00e4 ja rajata aikaikkunaa, jonka kuluessa hy\u00f6kk\u00e4\u00e4j\u00e4t voivat hy\u00f6dynt\u00e4\u00e4 vaarantuneita tai haavoittuvia varmenteita.<\/p>\t\t\t\t\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-48691b6 e-flex e-con-boxed e-con e-parent\" data-id=\"48691b6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9233832 e-con-full e-flex e-con e-child\" data-id=\"9233832\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-942ddd8 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"942ddd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-question-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 448c-110.532 0-200-89.431-200-200 0-110.495 89.472-200 200-200 110.491 0 200 89.471 200 200 0 110.53-89.431 200-200 200zm107.244-255.2c0 67.052-72.421 68.084-72.421 92.863V300c0 6.627-5.373 12-12 12h-45.647c-6.627 0-12-5.373-12-12v-8.659c0-35.745 27.1-50.034 47.579-61.516 17.561-9.845 28.324-16.541 28.324-29.579 0-17.246-21.999-28.693-39.784-28.693-23.189 0-33.894 10.977-48.942 29.969-4.057 5.12-11.46 6.071-16.666 2.124l-27.824-21.098c-5.107-3.872-6.251-11.066-2.644-16.363C184.846 131.491 214.94 112 261.794 112c49.071 0 101.45 38.304 101.45 88.8zM298 368c0 23.159-18.841 42-42 42s-42-18.841-42-42 18.841-42 42-42 42 18.841 42 42z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6b1e225 e-con-full e-flex e-con e-child\" data-id=\"6b1e225\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-178079e elementor-widget elementor-widget-text-editor\" data-id=\"178079e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Usein kysytyt kysymykset<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d43cb7b elementor-widget elementor-widget-text-editor\" data-id=\"d43cb7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>1. Mit\u00e4 tapahtuu, kun SSL\/TLS-varmenne vanhenee?<\/h3><p style=\"padding-left: 40px;\">K\u00e4vij\u00e4t saattavat n\u00e4hd\u00e4 tietoturvavaroituksia, eiv\u00e4tk\u00e4 selaimet v\u00e4ltt\u00e4m\u00e4tt\u00e4 en\u00e4\u00e4 pid\u00e4 yhteytt\u00e4 turvallisena, mik\u00e4 voi heikent\u00e4\u00e4 k\u00e4ytt\u00e4jien luottamusta ja sivuston saavutettavuutta.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ace4fb5 elementor-widget elementor-widget-text-editor\" data-id=\"ace4fb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>2. Miksi SSL\/TLS-varmenteiden voimassaoloajat lyhenev\u00e4t?<\/h3><p style=\"padding-left: 40px;\">Lyhyemm\u00e4t voimassaoloajat rajoittavat aikaa, jonka vaarantuneet tai v\u00e4\u00e4rink\u00e4ytetyt varmenteet voivat pysy\u00e4 voimassa, ja kannustavat p\u00e4ivitt\u00e4m\u00e4\u00e4n varmenteita useammin.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-464bee4 elementor-widget elementor-widget-text-editor\" data-id=\"464bee4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>3. Parantaako SSL\/TLS-varmenne hakukoneoptimointia?<\/h3><p style=\"padding-left: 40px;\">HTTPS on Googlelle kevyt sijoitukseen vaikuttava signaali. SSL\/TLS-varmenne ei kuitenkaan yksin\u00e4\u00e4n takaa parempia hakusijoituksia.<\/p>\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\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Nyky\u00e4\u00e4n internetin k\u00e4ytt\u00e4j\u00e4t pit\u00e4v\u00e4t tietoturvaa eritt\u00e4in t\u00e4rke\u00e4n\u00e4. Jos he huomaavat, ett\u00e4 verkkosivusto tai sovellus voi vaarantaa heid\u00e4n tietoturvansa, he tuskin k\u00e4ytt\u00e4v\u00e4t sit\u00e4. SSL- ja TLS-protokollat kehitettiin parantamaan tietoturvaa salaamalla tietoja ja auttamalla suojaamaan k\u00e4ytt\u00e4jien tietoja. Mik\u00e4 on SSL (Secure Sockets Layer)?Vuonna 1990 kehitettiin protokolla, jonka tarkoituksena oli parantaa internetin tietoturvaa salaamalla tietoja ja v\u00e4hent\u00e4m\u00e4ll\u00e4 riski\u00e4 [\u2026]<\/p>\n","protected":false},"author":7,"featured_media":3555,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SSL vs. TLS: erot, tietoturva ja voimassaolo<\/title>\n<meta name=\"description\" content=\"Tutustu SSL:n ja TLS:n eroihin, siihen miten varmenteet suojaavat sivustoja ja miksi niiden voimassaolo on t\u00e4rke\u00e4\u00e4 tietoturvan ja luottamuksen kannalta.\" \/>\n<meta name=\"robots\" content=\"index, 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