The only part of the article that addressed that subject was Hillary's statement that she did not send or receive any material that was marked classified knowing full well that in accordance with the security oath she read and signed upon appointment to Secretary of State, classified material is classified whether it is marked or not in accordance with the statutes regarding compromise of classified information. You can find many places that detail that Hillary's emails contained over 2,000 emails containing classified information with more than 20 being classified at Top Secret and above. The information is classified, regardless of whether it is marked or not. The information is still classified and Hillary knows it.