"I will not comment on or confirm what are alleged to be stolen State Department cables. But I can say that the United States deeply regrets the disclosure of any information that was intended to be confidential, including private discussions between counterparts or our diplomats' personal assessments and observations"

This quote by Hillary Clinton is in action to the release of personal files from the State Department. She is expressing remorse for the disclosure of any secret information, consisting of private conversations in between counterparts and personal assessments and observations of diplomats. She is also making it clear that she will not talk about or confirm the authenticity of the documents. This declaration shows that the United States takes the security of secret information seriously and is committed to securing the privacy of its diplomats. It also works as a pointer that the release of confidential information can have severe consequences.