Brian Krebs reports on a study by AARP about data breaches over the past 16 months.

The study attributes about a third of breaches to deliberate software breakins, slightly less (29%) to theft of laptops, and most of the rest (23%) to improper display of sensitive information. Employee theft came in at 7%, and lost backup tapes at 2%. Of course, some of the actual individual lost tape incidents have lost millions of identities.