{"id":1009,"date":"2019-03-06T12:45:36","date_gmt":"2019-03-06T12:45:36","guid":{"rendered":"https:\/\/www.ciraltos.com\/?p=1009"},"modified":"2023-03-23T23:32:27","modified_gmt":"2023-03-24T04:32:27","slug":"is-azure-disk-encryption-necessary","status":"publish","type":"post","link":"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/","title":{"rendered":"Is Azure Disk Encryption Necessary?"},"content":{"rendered":"\n<figure class=\"wp-block-image alignleft is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.ciraltos.com\/wp-content\/uploads\/2019\/03\/LTd5a5Xyc.png\" alt=\"Good Azure Question\" class=\"wp-image-1010\" width=\"116\" height=\"150\" srcset=\"https:\/\/www.ciraltos.com\/staging2\/wp-content\/uploads\/2019\/03\/LTd5a5Xyc.png 463w, https:\/\/www.ciraltos.com\/staging2\/wp-content\/uploads\/2019\/03\/LTd5a5Xyc-232x300.png 232w\" sizes=\"(max-width: 116px) 100vw, 116px\" \/><\/figure>\n\n\n\n<p>I got the a good question below from Zaniar this week:<\/p>\n\n\n\n<p>My question &#8212;- If Azure VM&#8217;s are encrypted at rest now (SSE) does this mean the data on the volumes are also encrypted? and if we want a further layer of encryption should we use BEK or KEK which one is better?<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>It comes down to a matter of trust and requirements. Microsoft encrypts Managed Disks and Storage Account data at rest by default and the data is encrypted in transit with encrypted transfer protocols.&nbsp; If there is a simple requirement to encrypt data at rest and in transit, then everything can be left default and that requirement is met.&nbsp; <\/p>\n\n\n\n<p>However, Storage Service Encryption decrypts data at retrieval.\n&nbsp;Data would be decrypted at a new\nlocation if someone copied it outside the environment.&nbsp; This is true if that person was a legitimate user\nor if someone got unauthorized access to an account.&nbsp; With Azure Disk Encryption, the data would\nstill be encrypted if a virtual disk was copied to a new location and require\nthe key to decrypt.<\/p>\n\n\n\n<p>By default, both Storage Service Encryption and Azure Disk Encryption use a Microsoft encryption keys.&nbsp; This is where trust comes into play.&nbsp; There is an option for both to uses a customer managed key if you want to add an extra layer of security.&nbsp; <\/p>\n\n\n\n<p>If I was hosting sensitive medical records or proprietary\nsource code for a client on a server, I may consider using Azure Disk\nEncryption with a customer managed key.&nbsp; It\nall comes down to the security requirements of an organization.<\/p>\n\n\n\n<p>As for BEK and KEK, when I wrote the first couple of posts\non Azure Disk Encryption there were limitations around backup and recovery between\nthe two.&nbsp; That is no longer an issue,\neither will give similar results. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>I got the a good question below from Zaniar this week: My question &#8212;- If Azure VM&#8217;s are encrypted at rest now (SSE) does this mean the data on the volumes are also encrypted? and if we want a further layer of encryption should we use BEK or KEK which one is better?<\/p>\n","protected":false},"author":1,"featured_media":4039,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[1],"tags":[175,9,154,360,361,358,359,155,11,150],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Is Azure Disk Encryption Necessary? - ciraltos<\/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.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Is Azure Disk Encryption Necessary? - ciraltos\" \/>\n<meta property=\"og:description\" content=\"I got the a good question below from Zaniar this week: My question &#8212;- If Azure VM&#8217;s are encrypted at rest now (SSE) does this mean the data on the volumes are also encrypted? and if we want a further layer of encryption should we use BEK or KEK which one is better?\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/\" \/>\n<meta property=\"og:site_name\" content=\"ciraltos\" \/>\n<meta property=\"article:published_time\" content=\"2019-03-06T12:45:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-03-24T04:32:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ciraltos.com\/staging2\/wp-content\/uploads\/2023\/03\/LTd5a5Xyc.png\" \/>\n\t<meta property=\"og:image:width\" content=\"463\" \/>\n\t<meta property=\"og:image:height\" content=\"599\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Travis Roberts\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ciraltos\" \/>\n<meta name=\"twitter:site\" content=\"@ciraltos\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Travis Roberts\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/\"},\"author\":{\"name\":\"Travis Roberts\",\"@id\":\"http:\/\/www.ciraltos.com\/staging2\/#\/schema\/person\/25391996d6cddfecd4d257162b7e373a\"},\"headline\":\"Is Azure Disk Encryption Necessary?\",\"datePublished\":\"2019-03-06T12:45:36+00:00\",\"dateModified\":\"2023-03-24T04:32:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/\"},\"wordCount\":317,\"commentCount\":0,\"publisher\":{\"@id\":\"http:\/\/www.ciraltos.com\/staging2\/#\/schema\/person\/25391996d6cddfecd4d257162b7e373a\"},\"keywords\":[\"ARM\",\"Azure\",\"Azure Disk Encryption\",\"BEK\",\"Certificate\",\"disk encryption\",\"KEK\",\"managed disks\",\"Microsoft\",\"storage account\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/\",\"url\":\"https:\/\/www.ciraltos.com\/staging2\/is-azure-disk-encryption-necessary\/\",\"name\":\"Is Azure Disk Encryption Necessary? 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