Oh boy. As someone who has held a security clearance for such material, I can tell you this is very bad. I know where this information probably comes from and they must be furious.
Some may say that even if Clinton committed security violations, there is no evidence the material got into the wrong hands no blood, no foul etc......But I understand Legally that is not relevant because “Failing to safeguard information” is the issue.
From what I’ve been reading it’s not necessary to prove the information reached an adversary, or that an adversary did anything harmful with the information for a crime to have occurred.
Possible similarities might be compared with Manning and Snowden.... The standard is “failure to protect” by itself.
However now that they’ve discovered top security clearance information has indeed been found....she’s in very deep waters.