So Who's Read Your Tax Return?

From CBS News:

Private contractors revamping IRS computers committed security violations that significantly increased the possibility that private taxpayer information might be disclosed, Treasury Department inspectors say.

An investigation by the department's inspector general for tax administration found that employees working for contractors, or an experienced hacker, could use the contractors' computers to gain access to taxpayer data.

"Our concerns were increased when we could not find documentation that all contractor employees had received background investigations as required," the report said.

Other lapses left the IRS computer system vulnerable to viruses and hackers, investigators said.