Security at Foursquare

Reporting a vulnerability

If you are a security researcher and you believe you have discovered a vulnerability on Foursquare, please email us at We treat all security reports as urgent and we’ll acknowledge that we have received your report as soon as we can. In the unlikely event that you don’t hear back from us within 24 hours, ping us again either by email or on twitter. After we’ve received your report we will work with you to investigate the issue and resolve it as soon as possible.

We have a few guidelines we need researchers to follow when looking for vulnerabilities. Respect our user’s privacy. You may not access or modify user data without our permission. Do not employ denial-of-service attacks against Foursquare, and attempt to avoid degrading our quality of service. After reporting a vulnerability, we ask that you allow us a reasonable period of time to investigate and fix the issue before you disclose it publicly.

For more information and to view our hall of fame please visit our security page