How are classes more secure than structures?

Does that help Another difference with classes is that when you assign an structure instance to a variable, you are not just copying a reference but indeed copying the whole structure. So if you modify one of the instances (you shouldn't anyway, since structure instances are intended to be immutable), the other one is not modified.

Hope this helps A class and a struct are equivalent (except for the default privacy)
but grammar doesn't allow struct in template:

I wish this helpful for you It is important to understand the vulnerability of the System.String type. It is impossible to make it completely secure, SecureString exists to minimize the risk of exposure. System.String is risky because:
Their content is visible elsewhere, without having to use a debugger. An attacker can look in the paging file (c:\pagefile.sys), it preserves the content of RAM pages that were swapped out to disk to make room for other programs that need RAM System.String is immutable, you cannot scrub the content of a string after you used it The garbage collected heap compacts the heap but does not reset the content of the memory that was freed-up. Which can leave a copy of the string data in memory, entirely out of reach from your program.

Any of those help in C++, there is almost no difference between struct and class. yes OOP is available with the keyword struct.
you can consider both class and struct the same except that:

Hope this helps There are two different constructs: struct and class, in a class, members are private by default, whereas in struct, members are public by default. That's all. They can be used either way according to convenience.