Another good reason not to provide truthful information as far as your birth city and date of birth when you join a social network site. Government uses your birthday and birth city to create your Social Security number. By the way, government, private investigators and bill collectors like social sites like facebook. It makes their tracing jobs so much easier.
In the third experiment, the researchers used the technology to predict personal interests and identify students, including some social security numbers, with only a photo of their face to start.
Social security numbers, Acquisti pointed out in 2009, are a security flaw as they can be predicted if you know the person’s hometown and date of birth.
This new technology uses that information and in many cases can determine a person’s social security number.
In this experiment, the researchers looked at Carnegie Mellon University students and those who had a date of birth and hometown displayed on their social media account page.