Not clear (to me) in the original post -- was this done accidentally or intentionally?
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I don't know that's what happened here, though; there are malicious possible explanations!
This isn't too different from the argument that (I believe reasonably) applies for how a company has the right to monitor employees, but I think many people are opposed to even democratic governments monitoring people and would consider such use malicious.
So a government monitoring its employees is one step closer even than a company, since it's the same organization in this case (though again, I think it's largely reasonable for a government to monitor their employees).