{"id":124,"date":"2011-02-23T08:13:04","date_gmt":"2011-02-23T13:13:04","guid":{"rendered":"http:\/\/www.digitalundercurrents.com\/blog\/?p=124"},"modified":"2011-02-23T08:13:04","modified_gmt":"2011-02-23T13:13:04","slug":"sanitizing-ssds","status":"publish","type":"post","link":"http:\/\/www.digitalundercurrents.com\/blog\/?p=124","title":{"rendered":"Sanitizing SSDs"},"content":{"rendered":"<p><a href=\"http:\/\/www.usenix.org\/events\/fast11\/tech\/full_papers\/Wei.pdf\">This paper<\/a> (warning: PDF) from the Usenix FAST conference looks at an interesting question: with hard drives quickly giving way to solid-state drives (SSDs), how do we securely wipe data from workstations using the new technology?<\/p>\n<p>From the paper:<\/p>\n<blockquote><p>Reliably erasing data from storage media (sanitizing the<br \/>\nmedia) is a critical component of secure data manage-<br \/>\nment. While sanitizing entire disks and individual files is<br \/>\nwell-understood for hard drives, flash-based solid state<br \/>\ndisks have a very different internal architecture, so it<br \/>\nis unclear whether hard drive techniques will work for<br \/>\nSSDs as well.<\/p>\n<p>We empirically evaluate the effectiveness of hard<br \/>\ndrive-oriented techniques and of the SSDs\u00e2\u20ac\u2122 built-in san-<br \/>\nitization commands by extracting raw data from the<br \/>\nSSD\u00e2\u20ac\u2122s flash chips after applying these techniques and<br \/>\ncommands. Our results lead to three conclusions:<br \/>\nFirst, built-in commands are effective, but manufactur-<br \/>\ners sometimes implement them incorrectly. Second,<br \/>\noverwriting the entire visible address space of an SSD<br \/>\ntwice is usually, but not always, sufficient to sanitize the<br \/>\ndrive. Third, none of the existing hard drive-oriented<br \/>\ntechniques for individual file sanitization are effective on<br \/>\nSSDs.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>This paper (warning: PDF) from the Usenix FAST conference looks at an interesting question: with hard drives quickly giving way to solid-state drives (SSDs), how do we securely wipe data from workstations using the new technology? From the paper: Reliably erasing data from storage media (sanitizing the media) is a critical component of secure data [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-124","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=124"}],"version-history":[{"count":0,"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/124\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=124"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.digitalundercurrents.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}