US: Computer breach bigger than first thought; 334K victims | Inquirer Technology

US: Computer breach bigger than first thought; 334K victims

/ 03:19 PM August 18, 2015

In this April 13, 2014 file photo, the Internal Revenue Service Headquarters (IRS) building is seen in Washington. The IRS says thieves used an agency website to steal tax information from as many as 220,000 additional taxpayers. The agency first disclosed the breach in May. Monday’s revelation more than doubles the total number of potential victims, to 334,000. AP

In this April 13, 2014 file photo, the Internal Revenue Service Headquarters (IRS) building is seen in Washington. The IRS says thieves used an agency website to steal tax information from as many as 220,000 additional taxpayers. The agency first disclosed the breach in May. Monday’s revelation more than doubles the total number of potential victims, to 334,000. AP

WASHINGTON — A computer breach at the U.S. tax collecting agency in which thieves stole tax information from thousands of taxpayers is much bigger than the agency originally disclosed.

An additional 220,000 potential victims had information stolen from an Internal Revenue Service website as part of a sophisticated scheme to use stolen identities to claim fraudulent tax refunds, the IRS said Monday. The revelation more than doubles the total number of potential victims, to 334,000.

Article continues after this advertisement

The breach also started earlier than investigators initially thought. The tax agency first disclosed the breach in May.

FEATURED STORIES

The thieves accessed a system called “Get Transcript,” where taxpayers can get tax returns and other filings from previous years. In order to access the information, the thieves cleared a security screen that required knowledge about the taxpayer, including federal pension identification number, date of birth, tax filing status and street address, the IRS said.

The personal information was presumably stolen from other sources. The IRS believes the thieves were accessing the IRS website to get even more information about the taxpayers, which could help them claim fraudulent tax refunds in the future.

Article continues after this advertisement

In all, the thieves used personal information from about 610,000 taxpayers in an effort to access old tax returns. They were successful in getting information from about 334,000 taxpayers.

Article continues after this advertisement

The IRS isn’t the first agency — public or private — to initially underestimate the magnitude of a data breach. The Office of Personnel Management announced earlier this year that hackers had stolen sensitive information on 4.2 million people. The number of affected people has since grown to more than 21 million.

Article continues after this advertisement

The IRS said it is notifying all potential victims and offering free credit monitoring services. The IRS is also offering to enroll potential victims in a program that assigns them special ID numbers that they must use to file their tax returns.

The IRS said Monday that thieves started targeting the website in November. Originally, investigators thought it started in February. The website was shut down in May.

Article continues after this advertisement

On Monday, the IRS did not identify a potential source of the crime. But in May, officials said IRS investigators believe the identity thieves are part of a sophisticated criminal operation based in Russia.

Your subscription could not be saved. Please try again.
Your subscription has been successful.

Subscribe to our daily newsletter

By providing an email address. I agree to the Terms of Use and acknowledge that I have read the Privacy Policy.

TOPICS: breach, Computer, Hack, IRS, tax
TAGS: breach, Computer, Hack, IRS, tax

Your subscription could not be saved. Please try again.
Your subscription has been successful.

Subscribe to our newsletter!

By providing an email address. I agree to the Terms of Use and acknowledge that I have read the Privacy Policy.

© Copyright 1997-2024 INQUIRER.net | All Rights Reserved

This is an information message

We use cookies to enhance your experience. By continuing, you agree to our use of cookies. Learn more here.