[e1ven]

I am not an expert in the subject, but as far as I understand most countries in the world are party to the Byrne convention.

One of the details that this stipulates is that works are automatically copyrighted upon creation – even if you don't register work with the copyright office it still holds protection.

This means that any picture, text, or other work in a tangible medium that you share without permission could be considered potentially infringing, and leave you open to a lawsuit.

There are defenses you can argue, but that would only be after the lawsuit has already started, potentially costing you time and money for legal representation.

[tnzk]

I am aware of the convention, and that anything somewhat creative is supposed to be protected by copyrights.

Are people share the things without permission there, so frequently? Even if so, why should these sharing be legal?