Smartphones are growing at rapid pace. Nearly every person has a smartphone, whereas the number of smartphones will outnumber humans soon.
Therefore, app security should be a concern for everybody, even famous companies, like Starbucks and Snapchat are affected. Both were part of major PR disasters in 2014:
security holes damaged the image of these companies and many users deleted the apps of Starbucks and Snapchat from their smartphones.
Here you will find more interesting information about the topic: Smart Phones, Dumb Apps – 80% of Android’s Top Apps are Vulnerable