The Internal Revenue Service already increased the total number of accounts accessed in last year's cyber attack once. Today, it's raising the number gain. The IRS announced that during a 9-month review of the incident, it discovered that an additional 390,000 taxpayer accounts were potentially accessed during the breach. Those accounts are in addition to the confirmed access of and initial 114,000 last May and the subsequent 220,000 that were added in August. For those keeping track at home, today's announcement brings the total to over 700,000 affected tax payers.