Last week, CareFirst BlueCross BlueShield (CareFirst) reported a data breach that was initially discovered last year. When the incident was first noticed, the company assumed they had taken care of the problem – only to learn that wasn’t the case ten months later. In each of the three cases, the assumptions were wrong and tens of millions of records were exposed because of it. Each firm took months to detect the intrusions, which is a problem shared by organizations the world over.”]