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Serge Egelman

CVS Responds: Fake News!

As a followup to my previous post, I both emailed CVS and tweeted at them to give them an opportunity to comment on their app’s location-sharing practices: I noticed that your mobile app appears to be sharing my location data with around 40 different third parties. Can you please explain this? Is this a bug? They responded 5 hours later, claiming that they do not share location data with any third parties: …we do not… Continue Reading

Serge Egelman

CVS Discretely Shares Your Location with 40+ Other Sites

Recently, we decided to take a closer look at apps in our database that are sharing location data. This is a concern, because it could be used to track someone over time. One app in particular stood out, just based on the sheer number of data recipients. The “CVS/pharmacy” app appears to be sending the user’s GPS coordinates to over 40 different entities! Some of these include:
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