Foursquare vulnerability exposes users email addresses
Foursquare vulnerability exposes users email addresses. A location based Social Networking platform with 45 million users,’Foursquare’ was vulnerable to the primary email address disclosed.
Foursquare is a Smartphone application that gives you details of nearby cafes, bars, shops, parks using GPS location and also tells about your friends nearby. According to a Penetration tester and hacker Jamal Eddine, an attacker can extract email addresses of all 45 million users just by using a few lines of scripting tool.
Basically the flaw exists in the Invitation system of the Foursquare app. While testing the app, he found that invitation received on the recipient’s end actually disclosing the sender’s email address, as shown above.