What are all possible ways to add strings to the .rdata section of a Binary Executable?

I was wondering what are all the possible ways people can mess with the executable’s .rdata strings ?

Because I’ve actualy seen it .. But I do not have any idea how they do that.

Some random dude made like a copy of My executable but with more strings (Files Names) on an [x] offset that falls into the .rdata section, which caused the Executable to map more files in the memory …

How is that even possible ?