In case you were suffering from some privacy problems on Facebook, here are some Facebook security tips:
1) Protect your password. Don’t use your Facebook password anywhere else online and never share it. You should be the only one who knows it. Avoid including your name or common words. Your password should be difficult to guess.
2) Facebook will never send you a message or email asking for your login details or credit card number. If someone asks you for this information do not respond or click on any links in their message. Please report the message to our team to investigate and then delete it. You can also block the sender from contacting you again.
3) Use our extra security features to add more protections to your account and information on Facebook.
Source: Facebook