In recent years, smartphone messenger apps have gained so much popularity that they will, sooner or later, replace SMS-based text messaging. The resulting privacy implications, however, have thus far been neglected. With this project, therefore, we aim to raise awareness of the various kinds of privacy-related information that can be queried using a phone number without any user authorization. We will also highlight how regularly querying a user’s online status can easily allow inferences to be drawn about
It is well-known that intentionally shared profile information, such as pictures and status messages, can be queried using a user's phone number without their knowledge. The fact that this also comprises system events, such as a user's current availability status, has, however, been thus far mostly overlooked. To demonstrate the reality of this threat, we monitored the online times of 1,000 randomly chosen users of the popular WhatsApp messaging application over several months. We will use anonymised usage
For more details on our collected data, please refer to the Summary Data and User Statistics pages.
Willkommen auf der Webseite des medienpädagogischen Beraters digitaler Bildung der Schulämter im Landkreis Roth, der Stadt Sch
Willkommen auf der Webseite des medienpädagogischen Beraters digitaler Bildung der Schulämter im Landkreis Roth, der Stadt Sch
Mobile (Private) Contact Discovery | Breaking & Fixing Contact Discovery in Mobile Messengers