IBM has acknowledged that in early 2007 a third-party contractor misplaced a tape containing the personal information of current and former IBM employees. The tape was lost in transit to its Armonk, N.Y, headquarters some time in February. Recently, IBM was in the news as one of the companies helping to investigate the massive data breach at TJX.
Big Blue started informing affected employees last week, and as compensation the company is offering one year of free credit monitoring. The exact number of affected employees is not known but it's thought to include personnel who worked for the company between 1995 and today.