Security numbers. In November 2011, due to privacy and identity theft concerns, the Social Security Administration redacted and no longer included death data derived from State sources. This resulted in an approximately 33% drop in reported deaths. On December 18, 2011, Ancestry.com, changed access to the SSDI by moving the SSDI search behind a paywall, and stopped displaying the Social Security information of people who had died within the past 10 years. Some of their originally free information is now available via paid subscription only. However, other sites still provide free access. In March 2012, the entire Death Master File, edition of November 30, 2011, was made available for download. A more recent version was made available May 31, 2013. Updates are also available by a subscription service. However, prices for both the full file and the updates are in the business-only range, not what most hobbyists (such as amateur genealogists) would be willing to pay. A review by the Government Accountability Office in 2013 found that the Social Security Administration and other federal benefit-paying agencies that use data from the Death Master File are potentially vulnerable to making improper payments due to errors or processes that could lead to errors. See also Credit zombie References External links These websites may require subscription/registration to search or get results United States Social Security Death Index at FamilySearch.org U.S. Social Security Death Index, 1935–2014 at Ancestry.com Social Security Death Index at GenealogyBank.com Social Security Death Index at FindMyPast.com Searching the Social Security Death Index (SSDI) in One Step at SteveMorse.org Social Security Death Index is 89,430,629 Death Records No Fee to Search at MyTrees.com Death in the United States Government databases in the United States Identity documents of the United States Vital statistics (government records) Death indexes Person databases