How Private are Facebook Private Closed Groups Really? Not Very it Turns Out

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You know that old adage, that something is only as strong as its weakest link? Well, private Facebook groups are only as private as the admins keep them. Which means that all it takes is for one admin to accidentally (or intentionally) make the group public for a period of time, during which people who aren’t members of the closed Facebook group can see both the members, and what they posted. So how safe is it to rely on the private, closed status of a Facebook group? Not very, it turns out.

First, a quick explanation of the various privacy statuses for Facebook groups:

Public Facebook Groups: Anyone can see anything, including all of your posts.

Closed Facebook Groups: Also sometimes called Private Facebook Groups, anyone can see that you are a member, but only other members can see what you post.

Secret Facebook Groups: Only current and former members can even find the group, and only current members can see your posts.

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Facebook has this handy chart of all of the various permissions and privacy settings of Facebook groups:

facebook group privacy options


So, now that you have an understanding of what it means for a Facebook group to be public, or closed, just how secure and private is a closed Facebook group?

Is it a place you can share your deepest or darkest secrets, knowing that nobody outside of the group can see them?

Only if your group admins are 100% trustworthy, and infallible.


To demonstrate what we mean, here is an actual example.

This is a notification that Facebook places in your regular notifications area when an admin makes a privacy change to a group to which you belong. This particular group is usually closed, meaning nobody who is not a member of the group can see what group members post:

facebook private closed group made public 1

Now, we want to draw your attention to a couple of things:

First, this was the very first notification received in the notification stream, meaning that there was no obvious notification that the group had been made public in the first place. There was no message in the notification stream saying that “so-and-so changed the privacy of the group, it was private, now it’s public.”

This means that it’s possible that you will not know that the group in which you are a member, that you considered private, has actually been made public with a single click by one of the admins.

Now, we can hear some of you saying “Well, yes, but it doesn’t really matter because the notification also said that it was only ‘momentary’.”

facebook private closed group made public 2


Remember when we said that there was no obvious notification? For those who receive all Facebook notifications as email, as well as within Facebook, there actually is a notification that the group was made public – sent by email.

Here are the actual email notifications for our example:

facebook private closed group made public for 18 minutes 1


The astute observer will notice that this private group was made public for a full 18 minutes.

facebook private closed group made public for 18 minutes 2


(Our very own 18 minute gap – shades of Nixon!)

Now, is 18 minutes of unexpected public exposure of your posts really a big deal?

Consider that there are plenty of closed groups on Facebook like these:

closed domestic violence facebook groups

closed transgender groups on facebook

closed ptsd support groups facebook


And we say yes, any amount of public exposure of posts made in groups where you have been relying on your posts being and staying private and protected, is too much.

Now, all that said, Facebook says that (as of the time of this writing), once a group has 250 or more members the admin can only make it more restricted, not less. So, that may be true today – but it won’t necessarily be true tomorrow. Facebook changes things every day (and in fact openly states that they update some things – such as their apps – every two weeks like clockwork, whether they need it or not).

facebook updates apps every two weeks

As we’ve said more than once – if you don’t want someone to see it, don’t put it on the Internet. At all.

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2 thoughts on “How Private are Facebook Private Closed Groups Really? Not Very it Turns Out

  1. Thank you for this! I didn’t think it was overly suspicious to not trust Facebook, but I only had a hunch, and now I have an actual example.

  2. Once a group has at least 250 members, its privacy can only be changed to be more restrictive, not less.

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