A government watchdog agency has said that the Department of Homeland Security (DHS) "does not adequately review the privacy and effectiveness of data-mining systems it uses in counterterrorism efforts," reports InformationWeek. The Government Accountability Office (GAO) determined that personal privacy may be at risk after it evaluated six systems at DHS and its three affiliated agencies, Customs and Border Protection, Immigration and Customs Enforcement and Citizenship and Immigration. None of the agencies had an effective oversight framework or "performed all of the key activities associated with an effective evaluation framework," the GAO states in its report.  
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