Officials at the University of Mississippi Medical Center posted an online notice, saying they had "insufficient contact information" to individually notify those potentially compromised.
A survey of 5,000 senior IT managers conducted by market research firm B2B International has found that 35 percent of organizations worldwide don't use encryption to protect data.
As the FBI continues to investigate the dumped data of high-ranking government officials and celebrities, Equifax confirms that some of the information published was accessed from AnnualCreditReport.com.
The data allegedly includes Social Security numbers, financial information and other sensitive details belonging to a list of high profile public figures.
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