The list of users may very well be in use of telemarketers and the like.

A security researcher found a database containing information of Facebook users' names and phone numbers for 267 million users of the famous social media platform, according to Forbes magazine.Bob Diachenko was the security researcher who discovered the breach which may allow leaked information to be used by telemarketers and the like.

The list was completely public, according to the report. Facebook has been criticized repeatedly in recent years for its regularly compromised security systems. Read more at JPost