My advice related to the recent celebrity nude photo leaks:
Don't take any nude selfies, and you will be safe..
Here is the story, read to the end to learn a good way to avoid being hacked:
According to Apple these leaks weren't caused through complicated computer hacking; instead, they were brought about through conventional (security question/username) password reset methods. All someone needs is your Apple ID (often an easily guessed common email) and some personal information. When you tell iCloud that you forgot your password it offers the option to use security questions to get the information. Once you enter your Apple ID it will ask for your birthday. Depending on your privacy settings on Facebook, anyone could have that.
The best thing to do is LIE on these questions. Make up a set of LIES that only you will know when asked to reset your passwords.