Filter unwanted messages from walls and blocking nonlegitimate user in osn

Today�s life is totally based on Internet. Now a days people cannot imagine life without Internet. Information and communication technology plays vital role in today�s online networked society. In today�s life, we are very close to the online social networks. Online social networks are used for posting and sharing information across various social networking sites. But user�s privacy is not maintained by online social networks. For maintaining users sensitive information�s privacy online social networks provides little or no support. For filtering unwanted messages we propose a system using machine learning (ML). Using machine learning in soft classifier content based filtering performed. In proposed system filtering rules (FR�s) are provided for content independent filtering.. Blacklists are used for more flexibility by which filtering choices are increased. Proposed system provides security to the Online Social Networks.