Security analysis is a way of checking if something is safe and secure, like a big castle with walls and guards to protect it. When we check if something is secure, we want to make sure that nobody can get into it who is not supposed to be there.
Imagine you have a big piggy bank where you keep all your money. When you put all your money in it and close it, you want to make sure nobody else can open it and take your money. So, you check the locks on the box, maybe try to open it with different keys or tools, and make sure it can't be easily broken into. That's what security analysis does - it checks for weaknesses in the protection and makes sure no unauthorized person or thing can get through it.
Security analysts are people who specialize in checking if different things are secure enough, like computer programs, networks, or even buildings. They go through every possible way someone might try to break in, like guessing passwords or using viruses, and then come up with ways to make the protection stronger. You can think of them like the trained guard dogs outside the castle walls who are always alert and stopping any unsavory characters from getting in.
In the end, the goal of security analysis is to make sure everything is safe and secure so you are protected from anything bad happening. The more secure something is, the less likely it is to have any problems, and that's always a good thing!