{"id":95,"date":"2025-07-28T13:55:00","date_gmt":"2025-07-28T13:55:00","guid":{"rendered":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/scams\/?post_type=gsma_theme_resources&#038;p=95"},"modified":"2026-04-23T12:22:41","modified_gmt":"2026-04-23T12:22:41","slug":"ss7-securing-a-legacy-protocol-in-a-modern-threat-landscape-and-how-information-sharing-can-help-to-mitigate","status":"publish","type":"gsma_theme_resources","link":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/scams\/gsma_resources\/ss7-securing-a-legacy-protocol-in-a-modern-threat-landscape-and-how-information-sharing-can-help-to-mitigate\/","title":{"rendered":"SS7: Securing a Legacy Protocol in a Modern Threat Landscape, and How Information Sharing Can Help to Mitigate"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Signalling System No. 7 (SS7) has been a cornerstone of global mobile communication for decades. Originally developed in the 1970s and standardised in the 1980s, it was built for a world where telecom networks were state-owned, access was tightly controlled, and trust among operators was assumed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Security, in this context, was not a design priority. The SS7 signalling protocol, has critical vulnerabilities due to its outdated design: it lacks authentication and encryption, making it easier for attackers to intercept messages, track locations, and reroute calls or texts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Signalling System No. 7 (SS7) has been a cornerstone of global mobile communication for decades. Originally developed in the 1970s and standardised in the 1980s, it was built for a world where telecom networks were state-owned, access was tightly controlled, and trust among operators was assumed. Security, in this context, was not a design priority. [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"template":"","meta":{"image":null,"json":{"gsma_resources_type":"Document","gsma_resources_thumb":"null","gsma_resources_file":"null","gsma_resources_multi":null,"gsma_resources_wgr":null,"gsma_resources_video":"","gsma_resources_image":"null","gsma_resources_url":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/t-isac-blog\/ss7-securing-a-legacy-protocol-in-a-modern-threat-landscape-and-how-information-sharing-can-help-to-mitigate\/","gsma_resources_date":"","gsma_resources_button":"Read more"}},"tags":[128],"resource_categories":[59,82,47,65,68,69,45,67,49,46,50],"algolia_discover_type":[39,43],"class_list":["post-95","gsma_theme_resources","type-gsma_theme_resources","status-publish","hentry","tag-security-leader","resource_categories-apac","resource_categories-article","resource_categories-content-type","resource_categories-europe","resource_categories-middle-east-and-north-africa","resource_categories-north-america","resource_categories-region","resource_categories-latin-america","resource_categories-security","resource_categories-africa","resource_categories-topic","algolia_discover_type-article","algolia_discover_type-resource"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>SS7: Securing a Legacy Protocol in a Modern Threat Landscape, and How Information Sharing Can Help to Mitigate - Scams<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/scams\/gsma_resources\/ss7-securing-a-legacy-protocol-in-a-modern-threat-landscape-and-how-information-sharing-can-help-to-mitigate\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SS7: Securing a Legacy Protocol in a Modern Threat Landscape, and How Information Sharing Can Help to Mitigate\" \/>\n<meta property=\"og:description\" content=\"Signalling System No. 7 (SS7) has been a cornerstone of global mobile communication for decades. Originally developed in the 1970s and standardised in the 1980s, it was built for a world where telecom networks were state-owned, access was tightly controlled, and trust among operators was assumed. Security, in this context, was not a design priority. [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/scams\/gsma_resources\/ss7-securing-a-legacy-protocol-in-a-modern-threat-landscape-and-how-information-sharing-can-help-to-mitigate\/\" \/>\n<meta property=\"og:site_name\" content=\"Scams\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-23T12:22:41+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"SS7: Securing a Legacy Protocol in a Modern Threat Landscape, and How Information Sharing Can Help to Mitigate - Scams","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/scams\/gsma_resources\/ss7-securing-a-legacy-protocol-in-a-modern-threat-landscape-and-how-information-sharing-can-help-to-mitigate\/","og_locale":"en_US","og_type":"article","og_title":"SS7: Securing a Legacy Protocol in a Modern Threat Landscape, and How Information Sharing Can Help to Mitigate","og_description":"Signalling System No. 7 (SS7) has been a cornerstone of global mobile communication for decades. Originally developed in the 1970s and standardised in the 1980s, it was built for a world where telecom networks were state-owned, access was tightly controlled, and trust among operators was assumed. Security, in this context, was not a design priority. 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