Set your account so that only friends can see your pictures and posts. Click here for instructions.

This will not stop the duplication of your account. However it prevents the hacker from accessing your photos. Without the photos, the hacker will have to use a generic photo. If they have access to your photos, they can use a picture of you and this will make the fake account look more legit. The more legit the account looks the more of a chance a friend of yours will accept you as a friend. Once one of your friends accept the friends request, they will have access to your photos and posts (the posts to the friends but not posts that is in a closed group. The hacker would still have to get accepted in the group also) Please do not be upset if a friend accidentally accepts the fake account. It is easy to fall prey to these people.

When you get a friends request from anyone, you should follow these steps

1. Go to your wall

2. Click on Friends

3. Click Search

4. Type the name of the person requesting to be your friend

   1. If there is a friend with the same name on your list, do the following

      1. It could be a different person with the same name (I have someone with the exact same name as me on my Facebook account)

         1. Look at their account and see if it has a lot of detail (friends, photos and such) some do not have many friends and photos so that is not always a give away.

         2. See if they have many groups that they are in. If they have numerous groups (talking 40 or more) chances are they are not legit (It is still possible to be a legit account).

      2. If you determine it is the same person

         1. Contact the person (on your list and not the account asking you to accept) and ask if they have a second account (some do)

         2.  If he or she says no, inform him or her that her account has been duplicated. Then delete the request.

Best defense is to tighten your Facebook page if you can by setting the account to Friends only. However not everyone can set their page to Friends only because of what they use the page for.

Set the group to closed or to secret (depending on what you want the group to be)

The group admins do the following

1. Check the requester asking to join page to see if it is legit.

2. If the page have very few friends but the account appears to have been around for a long time, chances are it is not valid

3. If they have numerous groups, I am talking like 40 to 100 (Does not always mean it is fake)

4. Look at how old the account is

5. If in doubt, try messaging the person

FYI

Anyone that is a member of the group will see all posts that are posted in the group. It doesn't matter if a member's personal wall is set to public or friends. However if that persons personal wall is set to friends and a non friend that is in the group visits that person's wall, the group member will not see what is on that wall.

To better explain it, I am going to give an example

John Doe joins a closed group called funny moments. Lisa Jones is a member of the group but is also on John Doe's friends list. Bill Murray is in the group also but he is not on John Doe's friends list. John Doe's page is set to Friend's only. Bill Murray's page is set to Public.

Lisa visits John's personal Facebook page. Because Lisa is friends with John, Lisa can see Johns pictures and posts. Bill Murray visit's Johns Facebook account but Bill cannot see John's pictures and posts because John and Bill is not friends.  However John can see Bill's pictures because Bill's page is set to public.

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If a hacker does gain entry to the group, the hacker will be able to see what all is posted. As far as members, the hacker will only get to see content on a member's page if that page is set to public but will not see the content on a members page if the page is set to friends only. There is one exception to that rule. If that member had received a friends request from the hacker and had accepted the request, then the hacker will see stuff on a page set to friends only.