Insult against rules.
As I said, scanning a ships fit or cargo, without wardec, would be a suspect flag act.
You have no business peering into another players fit or cargo in HS, without a war.
If you walk down a street looking into car windows, police and citizens will consider you a suspect intent on committing a crime to violence against the car to get at what is in it.
In EVE suspects can be shot.
If you dont want to be shot, dont scan players fit or cargo in HS without a wardec.