Security Breach 300% Greater than IRS Originally Estimated:  The IRS is sending out more letters notifying taxpayers they may have been affected by the May 2015 security breach of the online Get Transcript service. The original estimate of affected taxpayers (those whom the hackers gained access to the taxpayer’s account) has grown from 114,000 to approximately 334,000 taxpayers. The hackers used stolen Social Security Numbers and other data acquired from social media and other sources to breach the IRS’s system. The IRS is offering free credit monitoring services and other protections (such as Identity Protection PINs) to taxpayers whose information was compromised. In addition, they are notifying another 170,000 households that their personal information could be at risk even though the fraudsters failed to access the IRS system with their information