Is Trusson a Layer of Security?

The trust zone is based on uses om a controller called the s a u security attribution to be able to specify which regions are secure or non secure. The idea, for example, something like trustsone, is that if you did end up having a bug in your code that, say, might expose secrets, then the other layer of security protection will make it even harder to secrets. Trusson itself is a part of a specification, a defined by arm. So depending on a, what, what version of the specification, how much o a ship fender chose to implement, there may or may not be trusted on. But the l b c 55 has one, correct? Do you