An improperly implemented feature in popular voice-over-IP application Viber can help cyber-criminals to bypass the locking mechanism of smartphones. Viber 2.3.6 on some Android devices might unlock the screen when replying a Viber message popup, wrote the Viber team in a security advisory. The number of Viber installations on Android is unknown. The Viber product runs on roughly 175 million products, but the number of installations is unknown. Viber has an option to prevent popups from unlocking the device.”]