The Wells Fargo Mobile application 1.1 for Android stores a username and password, along with account balances, in cleartext, which might allow physically proximate attackers to obtain sensitive information by reading application data.
http://viaforensics.com/appwatchdog/wells-fargo-android.html
http://online.wsj.com/article/SB10001424052748703805704575594581203248658.html