2. In January 2011, there were two hacking attempts on the Clinton email system in one day. An adviser to President Bill Clinton tried to shut down the server each time.

3. There were warnings issued to senior State Department officials that hackers were targeting personal email accounts. Below, an excerpt from a March 11, 2011, memo written by the assistant secretary of diplomatic security.

4. The audit also covered Clinton’s aides, some of whom did not cooperate when asked to respond to a questionnaire about email use. Some of the aides used their personal email accounts extensively for official business.

5. The package of emails turned over by Clinton was “incomplete.”

6. IT security officials were concerned about Clinton’s use of personal email and held meetings to discuss the need to preserve records and security. One staff member said the security director said the email system had been approved by state’s legal staff. The IG did not find evidence that the department’s legal adviser had reviewed or approved Clinton’s email system.

Another staff member who raised issues was told that their mission was “to support the Secretary, and instructed the staff never to speak of the Secretary’s personal email system again.”

7. The report also criticizes Colin Powell’s handling of official emails during his tenure as secretary of state, saying it was also “not an appropriate method” for preserving emails that are part of the federal record. When asked to defend her email system, Clinton has said that her predecessors also used personal accounts.

But the report also notes that by the time Clinton became secretary of state, the guidance on email use was much more detailed, suggesting that pointing to Powell is not an entirely fair comparison.