{"id":203,"date":"2009-10-12T13:17:38","date_gmt":"2009-10-12T20:17:38","guid":{"rendered":"https:\/\/www.backblaze.com\/blog\/2009\/10\/12\/snow-leopard-bug-deletes-data\/"},"modified":"2025-12-14T15:32:45","modified_gmt":"2025-12-14T23:32:45","slug":"snow-leopard-bug-deletes-data","status":"publish","type":"post","link":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/","title":{"rendered":"Snow Leopard Bug Deletes Data"},"content":{"rendered":"<p><img decoding=\"async\" id=\"image204\" src=\"https:\/\/www.backblaze.com\/blog\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg\" alt=\"Snow Leopard Guest Account Bug\" \/><\/p>\n<p id=\"bzdropcap\">Have you upgraded to Snow Leopard? Users on Apple&#8217;s forums are reporting a bug that deletes all user data if someone mistakenly logs into the &#8220;Guest&#8221; account. This issue was originally reported about a month ago on <a href=\"https:\/\/www.cnet.com\/news\/macfixit-readers-report-early-mac-os-x-10-6-snow-leopard-issues\/\" target=\"_blank\" rel=\"noopener noreferrer\">Cnet&#8217;s MacFixIt<\/a> but today is being mentioned across the web as more people are being bitten by the bug.<\/p>\n<p>While not completely reproducible, it&#8217;s happening frequently enough to require a basic action: <strong>turn off the guest account.<\/strong><\/p>\n<p>eHow explains how to turn off the guest account\u2014it&#8217;s quick and takes just one minute.<\/p>\n<p>Of course, you should also make sure your data is backed up, but I assume you already use <a href=\"https:\/\/www.backblaze.com\/cloud-backup\/personal\" target=\"_blank\" rel=\"noopener noreferrer\">Backblaze<\/a> to do this.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Have you upgraded to Snow Leopard? Users on Apple&#8217;s forums are reporting a bug that deletes all user data if someone mistakenly logs into the &#8220;Guest&#8221; account. This issue was originally reported about a month ago on Cnet&#8217;s MacFixIt but today is being mentioned across the web as more people are being bitten by the&hellip; <a class=\"more-link\" href=\"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/\">Continue reading <span class=\"screen-reader-text\">Snow Leopard Bug Deletes Data<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":204,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[121,12,11],"tags":[469],"class_list":["post-203","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-backing-up","category-backup-news","category-data-loss","tag-consumerbackup","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Critical Warning About the Snow Leopard Bug That Deletes User Data<\/title>\n<meta name=\"description\" content=\"Have you upgraded to Snow Leopard? Users on Apple&#039;s forums are reporting a bug that deletes all user data if someone mistakenly logs into the &quot;Guest&quot;\" \/>\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.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Critical Warning About the Snow Leopard Bug That Deletes User Data\" \/>\n<meta property=\"og:description\" content=\"Have you upgraded to Snow Leopard? Users on Apple&#039;s forums are reporting a bug that deletes all user data if someone mistakenly logs into the &quot;Guest&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/\" \/>\n<meta property=\"og:site_name\" content=\"Backblaze Blog | Cloud Storage &amp; Cloud Backup\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/backblaze\" \/>\n<meta property=\"article:published_time\" content=\"2009-10-12T20:17:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-14T23:32:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"550\" \/>\n\t<meta property=\"og:image:height\" content=\"165\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Gleb Budman\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@backblaze\" \/>\n<meta name=\"twitter:site\" content=\"@backblaze\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gleb Budman\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"A Critical Warning About the Snow Leopard Bug That Deletes User Data","description":"Have you upgraded to Snow Leopard? Users on Apple's forums are reporting a bug that deletes all user data if someone mistakenly logs into the \"Guest\"","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.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/","og_locale":"en_US","og_type":"article","og_title":"A Critical Warning About the Snow Leopard Bug That Deletes User Data","og_description":"Have you upgraded to Snow Leopard? Users on Apple's forums are reporting a bug that deletes all user data if someone mistakenly logs into the \"Guest\"","og_url":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/","og_site_name":"Backblaze Blog | Cloud Storage &amp; Cloud Backup","article_publisher":"https:\/\/www.facebook.com\/backblaze","article_published_time":"2009-10-12T20:17:38+00:00","article_modified_time":"2025-12-14T23:32:45+00:00","og_image":[{"width":550,"height":165,"url":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg","type":"image\/jpeg"}],"author":"Gleb Budman","twitter_card":"summary_large_image","twitter_creator":"@backblaze","twitter_site":"@backblaze","twitter_misc":{"Written by":"Gleb Budman","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#article","isPartOf":{"@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/"},"author":{"name":"Gleb Budman","@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#\/schema\/person\/9267dd4f4f7d705914ea0047cc0ff8bf"},"headline":"Snow Leopard Bug Deletes Data","datePublished":"2009-10-12T20:17:38+00:00","dateModified":"2025-12-14T23:32:45+00:00","mainEntityOfPage":{"@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/"},"wordCount":121,"commentCount":0,"publisher":{"@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#primaryimage"},"thumbnailUrl":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg","keywords":["ConsumerBackup"],"articleSection":["Backing Up","Backup News","Data Loss"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/","url":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/","name":"A Critical Warning About the Snow Leopard Bug That Deletes User Data","isPartOf":{"@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#primaryimage"},"image":{"@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#primaryimage"},"thumbnailUrl":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg","datePublished":"2009-10-12T20:17:38+00:00","dateModified":"2025-12-14T23:32:45+00:00","description":"Have you upgraded to Snow Leopard? Users on Apple's forums are reporting a bug that deletes all user data if someone mistakenly logs into the \"Guest\"","breadcrumb":{"@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#primaryimage","url":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg","contentUrl":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg","width":550,"height":165},{"@type":"BreadcrumbList","@id":"https:\/\/www.backblaze.com\/blog\/snow-leopard-bug-deletes-data\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Snow Leopard Bug Deletes Data"}]},{"@type":"WebSite","@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#website","url":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/","name":"Backblaze Cloud Solutions Blog","description":"Cloud Storage &amp; Cloud Backup","publisher":{"@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#organization","name":"Backblaze","url":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/www.backblaze.com\/blog\/wp-content\/uploads\/2017\/12\/backblaze_icon_transparent.png?fit=512%2C512&ssl=1","contentUrl":"https:\/\/i0.wp.com\/www.backblaze.com\/blog\/wp-content\/uploads\/2017\/12\/backblaze_icon_transparent.png?fit=512%2C512&ssl=1","width":512,"height":512,"caption":"Backblaze"},"image":{"@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/backblaze","https:\/\/x.com\/backblaze","https:\/\/www.youtube.com\/user\/Backblaze","https:\/\/en.wikipedia.org\/wiki\/Backblaze"]},{"@type":"Person","@id":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/#\/schema\/person\/9267dd4f4f7d705914ea0047cc0ff8bf","name":"Gleb Budman","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2021\/11\/bb-aboutus-Portrait_Gleb_Circle-Beige-e1636498747413-150x150.png","url":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2021\/11\/bb-aboutus-Portrait_Gleb_Circle-Beige-e1636498747413-150x150.png","contentUrl":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2021\/11\/bb-aboutus-Portrait_Gleb_Circle-Beige-e1636498747413-150x150.png","caption":"Gleb Budman"},"description":"Gleb Budman is a co-founder and has served as our chief executive officer since 2007, guiding the business from its inception in a Palo Alto apartment to a company serving customers in more than 175 countries with over an exabyte of data under management. Gleb has served as a member of our board of directors since 2009 and as chairperson since January 2021. Prior to Backblaze, Gleb was the senior director of product management at SonicWall and the vice president of products at MailFrontier, which was acquired by SonicWall. Before that, he served in a senior position at Kendara, which was acquired by Excite@Home, and previously founded and successfully exited two other startup companies.","url":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/author\/gleb\/"}]}},"jetpack_featured_media_url":"https:\/\/backblazeprod.wpenginepowered.com\/wp-content\/uploads\/2009\/10\/blog_snowleopard_bug.jpg","_links":{"self":[{"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/posts\/203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/comments?post=203"}],"version-history":[{"count":0,"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/posts\/203\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/media\/204"}],"wp:attachment":[{"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/media?parent=203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/categories?post=203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/backblazeprod.wpenginepowered.com\/blog\/wp-json\/wp\/v2\/tags?post=203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}