As of September 2015, there were 1.55 billion monthly active Facebook users worldwide. Criminals usually mine Facebook profiles for information that can be used to hack email accounts. From there, they steal your identity and drain your bank accounts. There are numerous scams that cycle through Facebook and each one has a twist. They are usually rather easy to identify because they are often too good to be true. In fact, security professionals believe the Zuckerberg giveaway, and postings like it, are used by criminals to locate potential victims.”]
Source: https://informationsecuritybuzz.com/articles/facebook-cyber-crime-dont-be-a-victim/