How did it Happen, Who did it and Why?
How was it traced?
Choose strong passwords - add special letters and capitals - e.g if your password was terydx make it Ter!ydx ( Capitalise T, add special character ! and ensure password length is over 6 characters)
Change your secret question if the answer is guessable by a person who can research your history. Write a complicated response, and store it somewhere safe.