Username searches such as UserSearch.org provide information such as websites for which a username has been registered. UserSearch.org offers searching options for finding email addresses, mobile phones and users of forums from its main search page.
After a basic username search, websites on which a username has been registered can be searched for additional information, including a user's name, date of birth, level of education, topics of interest and geographic location. The information is potentially sensitive and can put people and companies at risk of pretexting, or social engineering, attacks by criminals. This information is also sometimes used to locate criminals and gather evidence by law enforcement agencies.