- Passport number and series.
I think this is a sufficient set to carry out some kind of illegal activity. In Russia, with the help of this data, can find out even more information about a person using various specialized services. Or use this data for various registrations and so on.
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With this information, you can get a lot of data on this person: where he is registered at the place of residence, the exact address, his tax number, and a huge pile of all kinds of information.
Thank you for the additional context. In light of that, I agree that the post contains data that is too security-sensitive, and it should therefore not be allowed.