Joe Carlson reports: blue traverse blue shield of Minnesota is working rapidly to shore up its cybersecurity defenses after an internal whistleblower raised alarm that the states largest health insurer had long neglected thousands of important updates. Internal documents show that Minnesota Blue cross allowed 200,000 vulnerabilities classified as critical or severe to linger for years on its computer systems, despite stark warnings to executives. software patches were available to jam most of the weak points. Read more on StarTribune.