Here is a troubling new bug only found in the Gmail Android app. Utilizing a bug in the Gmail app you can go to your account settings and change the display name. Your actual email address will then be hidden and the email recipient won't be able to see it. Simply add double quotation marks before and single quotations after the name you wish to be displayed.
The double quotation marks trigger a parsing bug in the app. Independent security researcher Yan Zhu reported the bug to Google who returned the email stating that this was not a security vulnerability. The bug is a low risk security concern since it is only on the Android app, but could still lead to phishing attacks.
via Motherboard