Group: IRS mistakenly posted thousands of Social Security numbers on website
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One estimate put the figure as high as 100,000 names. The numbers were posted to an IRS database for tax-exempt political groups known as 527s and first discovered by the group Public.Resource.org.
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it hopes the Obama administration will act to restore access to the agency's nonprofit database and resolve its concerns over what it described as a "serious violation of federal law."
The big question is whether these constitute a release of those organizations’ donors’ SSNs. That would be worse by an order of magnitude than the release of their names, which was already used by liberal political proponents of gay marriage to harass the donors. This would be enough for identity theft. This is a very, very serious matter.