Don't keep your mobile number and e-mail id public, always keep its visibility to you only.
Use only popular facebook application and avoid newly launched apps. If you have don't worry just visit the link of application settings and edit them to remove.
While visiting facebook from public place watch out for the appropriate facebook URL which is either https://facebook.com or https://fb.com . If you don't see any of these two that means it's a phishing website and you will surely be hacked.
Always use the encrypted mode which is https://.... it keeps you safe.
Keep changing your facebook passwords at regular interval and most importantly clean "Cookies" of your browsers, either phone or computer.
Please don't install unwanted and unknown software in p.c. or phone because they can steal your passwords.
Don't let others guess your passwords or your extreme personal informations to anyone especially to the strangers.
It's better not to accept or send extremely unknown person.
It's best to hide your friend list because hackers may make similar accounts to your friend and send you a friend request.
And block the person if anyone disturbs or you think is following your profile.
I am now pretty sure that you are now beyond the reach of hackers. Bole to 100% safe but you never know ....
