{"id":56268,"date":"2024-06-07T06:27:13","date_gmt":"2024-06-07T06:27:13","guid":{"rendered":"https:\/\/www.threatshub.org\/blog\/spam-blocklist-sorbs-closed-by-its-owner-proofpoint\/"},"modified":"2024-06-07T06:27:13","modified_gmt":"2024-06-07T06:27:13","slug":"spam-blocklist-sorbs-closed-by-its-owner-proofpoint","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/spam-blocklist-sorbs-closed-by-its-owner-proofpoint\/","title":{"rendered":"Spam blocklist SORBS closed by its owner, Proofpoint"},"content":{"rendered":"<p><span class=\"label\">Exclusive<\/span> The Spam and Open Relay Blocking System (SORBS) \u2013 a longstanding source of info on known sources of spam widely used to create blocklists \u2013 has been shuttered by its owner, cyber security software vendor Proofpoint.<\/p>\n<p>SORBS provided free access to a DNS-based Block List (DNSBL) that lists over 12 million host servers known to disseminate spam, phishing attacks and other email nasties. The service states its list &#8220;typically includes email servers suspected of sending or relaying spam, servers that have been hacked and hijacked, and those with Trojan infestations.&#8221;<\/p>\n<p>Over 200,000 organizations use SORBS data, and the service is highly rated for its accuracy.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"condor\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>The service is over twenty years old and was created by Michelle Sullivan, who oversaw it as a Proofpoint employee working from Australia.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xmd=\",fluid,mpu,leaderboard,\" data-lg=\",fluid,mpu,leaderboard,\" data-xlg=\",fluid,billboard,superleaderboard,mpu,leaderboard,\" data-xxlg=\",fluid,billboard,superleaderboard,brandwidth,brandimpact,leaderboard,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<div class=\"adun_eagle_desktop_story_wrapper\">\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"mid\" data-raptor=\"eagle\" data-xxlg=\",mpu,dmpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<\/p><\/div>\n<p><i>The Register<\/i> inquired about the reasons for the service&#8217;s end, and Proofpoint sent the following statement:<\/p>\n<p>Decommissioning SORBS saw its &#8220;Zones&#8221; \u2013 18 lists, each devoted to a different class of spam-related server \u2013 emptied of information.<\/p>\n<p><i>The Register<\/i> understands restoring information to the Zones requires a trivial amount of work, and that the service&#8217;s code base is intact. Restarting the service would therefore not be difficult.<\/p>\n<p>We further understand that news of SORBS&#8217;s demise has sparked conversation in the anti-spam community about a possible acquisition.<\/p>\n<p>SORBS has already existed in three different incarnations.<\/p>\n<p>When Sullivan created the service, it was hosted it on infrastructure owned by the university she worked for at the time.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>SORBS&#8217;s impact on the uni grew to the point at which it was no longer welcome, leading software vendor GFI to <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2009\/11\/06\/sorbs_sold\/\" rel=\"noopener\">acquire the service<\/a>. A couple of years later, GFI offloaded SORBS to Proofpoint, which has owned it and employed Sullivan ever since.<\/p>\n<p><i>The Register<\/i> has been informed the service&#8217;s hosting and operating costs are at a level that make it infeasible for an individual to take over.<\/p>\n<p>Sources tell <i>The Register<\/i> that offers to acquire SORBS are certain to arrive \u2013 from spammers who have over the years expressed an interest in controlling the service for their own nefarious ends.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" id=\"story_eagle_xsm_sm_md_xmd_lg_xlg\" data-pos=\"mid\" data-raptor=\"eagle\" data-xsm=\",mpu,dmpu,\" data-sm=\",mpu,dmpu,\" data-md=\",mpu,dmpu,\" data-xmd=\",mpu,dmpu,\" data-lg=\",mpu,dmpu,\" data-xlg=\",mpu,dmpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33ZmMZ-@ZGBs8X7yboQkj8ogAAANE&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>The anti-spam community is understandably hopeful legitimate parties will commit to operating SORBS. While Proofpoint is correct in saying alternatives exist \u2013 SpamCop and Spamhaus are the most prominent \u2013 SORBS&#8217;s transparent operating practices have earned it many plaudits over its lifetime.<\/p>\n<p>Transparency in blocklist operations is paramount, because blocklist operators could with the stroke of a pen make life very hard for those who send email for a living. SORBS operated a support ticket system and staff who discussed listings, documented those discussions, and archived them. The service therefore had years&#8217; worth of records documenting its decisions and decision-making process \u2013 a body of work that proved SORBS was neither capricious nor vengeful. \u00ae<\/p>\n<p> READ MORE <a href=\"https:\/\/go.theregister.com\/feed\/www.theregister.com\/2024\/06\/07\/sorbs_closed\/\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spammers will probably bid to buy it, so community is trying to find a better home for decades-old service Exclusive\u00a0 The Spam and Open Relay Blocking System (SORBS) \u2013 a longstanding source of info on known sources of spam widely used to create blocklists \u2013 has been shuttered by its owner, cyber security software vendor Proofpoint.\u2026  READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[63],"tags":[],"class_list":["post-56268","post","type-post","status-publish","format-standard","hentry","category-the-register"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Spam blocklist SORBS closed by its owner, Proofpoint 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security &amp; Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent and Cybersecurity News.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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