The U.S. Government Accountability Office issued a report on March 15 saying that the IRS still hasn t fully implemented key components of a comprehensive information security program. The failures could make the IRS s financial systems and information unnecessarily vulnerable to insider threats, including errors or mistakes and fraudulent or malevolent acts by insiders, the report found. In 2010, the IRS processed more than 144 million individual and 2.4 million corporate tax returns, totalling $1.4 trillion dollars.
Source: https://threatpost.com/irs-security-holes-put-taxpayer-data-risk-031711/75035/