Let's say my password is NmsWQlWj1kzS534ojygJ. The 4th and 17th characters are W and j. Even if those two characters are stored in plain text, how exactly does

Let's say my password is NmsWQlWj1kzS534ojygJ. The 4th and 17th characters are W and j. Even if those two characters are stored in plain text, how exactly does that compromise my password?