A fake version of WhatsApp, denoted as Update WhatsApp Messenger, was recently found on Google Play Store.
The fake app was clearly designed to mimic the popular messaging app and to trick the users into downloading it thinking that they were downloading an actual WhatsApp’s update.

The fake application differentiates itself by adding unicode to the end of its developer name. Instead of a space, unicode added at the end makes it look like a space while having a different value, making it hard to detect.

According to the Hackers News portal, the fake app contained unwonted ads, and is also known to stealthily download an additional file to Android phones called Whatsapp.apk. The purpose of this file is yet unknown, but it is safe to assume that the intentions of its creators were less then questionable.

Until this problem is completely resolved by the Google Store administrator, any user wanting to download the WhatsApp messenger should do so  by visiting the official  WhatsApp's website and acquire the app from the site's official links.