IRS suffers another data breach

By Sally P. Schreiber, J.D.

The IRS revealed on Tuesday that it discovered and stopped an automated cyberattack on its e-filing personal identification number (PIN) system last month. According to the IRS, the cybercriminals used information stolen “elsewhere outside the IRS” to generate e-file PINs for stolen Social Security numbers (SSNs). E-file PINs are used by some taxpayers to electronically file their tax returns.

Although no personal taxpayer data were compromised or disclosed by the breach, the IRS noted that the cybercriminals succeeded in using 101,000 SSNs to access e-file PINs (out of 464,000 attempts).

The IRS is notifying the affected taxpayers and placing tax return identity theft markers on their accounts. It is also continuing to closely monitor the Electronic Filing PIN application against further breaches.

The IRS also said it is working with other agencies and the Treasury Inspector General for Tax Administration to assess the problem and has shared information with Security Summit state and industry partners. It said the breach was not related to last week’s e-filing shutdown.

The news follows closely on last summer’s announcement that a breach of the IRS Get Transcript system resulted in the theft of some 334,000 taxpayers’ tax data (see prior coverage here).

Sally P. Schreiber ( is a JofA senior editor. 


Year-end tax planning and what’s new for 2016

Practitioners need to consider several tax planning opportunities to review with their clients before the end of the year. This report offers strategies for individuals and businesses, as well as recent federal tax law changes affecting this year’s tax returns.


News quiz: Retirement planning, tax practice, and fraud risk

Recent reports focused on a survey that gauges the worries about retirement among CPA financial planners’ clients, a suit that affects tax practitioners, and a guide that offers advice on fraud risk. See how much you know with this short quiz.


Bolster your data defenses

As you weather the dog days of summer, it’s a good time to make sure your cybersecurity structure can stand up to the heat of external and internal threats. Here are six steps to help shore up your systems.