A worm has spread through WhatsApp on Android, changing contact group names to Priyanka as it crawls through. Infection relies on victims to accept and install a friend’s contact file from a friend, named Priyanka. The infection appears to be limited, given a relatively low level of Twitter messages. If you do get infected, its reportedly easy to remove and easy to ignore. But wed be smart to take it as a low-risk warning about the dangers of falling for social engineering stunts.”]
Source: https://nakedsecurity.sophos.com/2013/07/11/whatsapp-users-ignore-messages-from-priyanka-its-a-worm/