It's possible... I ve noticed the last 2 weeks some fake profiles posting scam content like who wants to get $1000 in a day etc..on different groups of cats and dogs without approval. It's possible, I'm looking for HOW. to do it.Technically it's impossible if you have your group moderated, unless they are posting stories in your groups. This could be possible because stories moderation is a completely separate option. Check for it.