viaForensics is pushing app developers to make security a priority. The Wall Street Journal has been following viaForensics work on mobile security:

You’d think the spate of Internet security breaches this spring would have companies on their toes. But when it comes to wireless apps, some are still making rookie mistakes.

Computer security firm viaForensics has found the applications for top Internet companies LinkedIn Corp., Netflix, Inc., Foursquare and Square, Inc. stored various forms of users’ personal data in plain text on a mobile device, putting sensitive information at risk to computer criminals.

The Android applications of LinkedIn, Netflix and Foursquare stored user names and passwords in unencrypted form on their Google-powered devices.

Storing that data in plain text violates a commonly accepted best practice in computer security. Since many people tend to use the same usernames and passwords across any number of sites, the failing could help hackers penetrate other accounts.

ViaForensics also found the iPhone version of Square’s mobile payments app exposed a user’s transaction amount history and the most recent digital signature of a person who signed an electronic receipt on the app.

via Some Top Apps Put Data at Risk