Hackers hacked into an Internal Revenue Service online administration and obtained entrance to data from more than 100,000 citizen accounts, the organization said on Tuesday.

The culprits utilized individual information acquired from different sources, including Social Security numbers, road addresses and dates of conception, to get into the IRS “Get Transcript” administration. The administration has been temporarily closed down.

The criminals obtained entrance to assessment forms and other duty data on record with the IRS. The IRS’ fundamental PC framework that handles charge filings (tax) was not affected.

The IRS said in an announcement that the hack was amazingly unpredictable, using particular, personal details of the taxpayers, including individual ID questions. It happened from February through mid-May. The IRS initially recognized bizarre activity a week ago.

“As usual, the IRS consider’s the security of taxpayers a top priority, and we are working forcefully to ensure the safety of affected accounts  and keep on strengthening our security conventions,” the IRS said.

The hackers made around 200,000 endeavors at getting into citizen accounts with individual information. The IRS is informing everybody who seemed to have individual data stolen and giving credit observing to about 100,000 individuals whose records were successfully accessed.