  Many online social network (OSN) users are unaware of the numerous security
risks that exist in these networks, including privacy violations, identity
theft, and sexual harassment, just to name a few. According to recent studies,
OSN users readily expose personal and private details about themselves, such as
relationship status, date of birth, school name, email address, phone number,
and even home address. This information, if put into the wrong hands, can be
used to harm users both in the virtual world and in the real world. These risks
become even more severe when the users are children. In this paper we present a
thorough review of the different security and privacy risks which threaten the
well-being of OSN users in general, and children in particular. In addition, we
present an overview of existing solutions that can provide better protection,
security, and privacy for OSN users. We also offer simple-to-implement
recommendations for OSN users which can improve their security and privacy when
using these platforms. Furthermore, we suggest future research directions.
