Whisper CEO Michael Heyward has turned more forceful in dismissing allegations from The Guardian that his anonymous app was tracking users, including people who opted out of geolocation before sharing their secrets.

Earlier today The Guardian reported that the secret-sharing app Whisper tracks the location of their anonymous users. The information came to light because the paper was in talks to partner with Whisper. Now Buzzfeed, Whisper's first major media partnership, has been "temporarily" suspended for privacy concerns, according to Digiday. Whisper and its editor-in-chief Neetzan Zimmerman have vigorously denied the allegations.