After Facebook, WhatsApp has come up as the biggest name in the internet messaging industry. With its coming, the world has seen a drastic increase in the number of people who take advantage of the users of the app. If you are one of the millions of people using WhatsApp, then you need to know that there are some serious threats to which you could be vulnerable.
The Malware Threat
What such sites do is to collect sensitive information from the downloaders and distribute malware. Some malware adds the users to WhatsApp spam lists, which contain Trojans and malware designed to retrieve the target's banking information.
Fortunately, there is a solution to this problem, which is easy to use and reliable. First, you must make sure that the URL for using WhatsApp Web is the official one (http://web.whatsapp.com/). You shouldn't have to download anything because it is a web-based app and works via your browser on the PC.
If the target person restores the conversation from backups, it will still crash the app again. This sort of damaging message works in both individual messages and in the group chats. All members in the group chats will have to delete the thread and leave the group in order to avoid the repeated crashing. You may not think of such messages that crash your WhatsApp messenger as a big deal, but many people use the app for business dealings and such vulnerability can cause many problems for them.
For now, there is no way to fix this problem. Your best shot is that WhatsApp's creator (Maikel Zweerink) fixes this problem before many people discover this way of crashing the app on a target's cell phone. The good news here though is that only Android smartphone users are more vulnerable to this.
Weak Privacy Settings
Snooping on Other WhatsApp Users
Beware that detecting the presence of spyware in your cell phone is easy, but detecting some apps is really tough. WhatsApp uses Mac addresses to route messages, which makes it a harder method of sneaking on WhatsApp conversations. By assigning someone else's' Mac address to your phone, you can temporarily intercept their WhatsApp messages.
The best way to prevent someone's accessing your WhatsApp is by making sure you never leave your phone lying around, or with someone whom you don't trust. It doesn't take more than 5 minutes to install tracking software or getting a phone's Mac address.