[Ed. – In theory, this might have happened if she had used the State Department email system. But the larger point is that she made a practice of sending classified email through unclassified channels — and she could have done that via the State Department systems too. So it all does matter. What isn’t certain at this point is what classified information may have been contained in any emails compromised via the hacked email accounts of her correspondents.]
The FBI’s once-secret report on former Secretary of State Hillary Clinton’s email system reveals that messages sent to aides were compromised by hostile foreign actors.
The FBI did not elaborate on the identity of foreign cyberattacks that normally refer to activities of sophisticated foreign intelligence services or criminal groups. The bureau was also unable to “conclusively” say whether classified information sent on Mrs. Clinton’s emails and mobile phones was compromised by “cyber means,” the report said. FBI cybersleuths blamed their inability to obtain all Mrs. Clinton’s old devices and computers for the inconclusive results.
However, the FBI did conclude that Mrs. Clinton sent emails to people with computer systems that were penetrated by foreign hackers.
“The FBI did find that hostile foreign actors gained access to the personal email accounts of individuals with whom Clinton was in regular contact, and, in doing so, obtained emails sent to or received by Clinton on her personal account,” the report noted.