Just like any other messenger, WhatsApp was developed to be used in cases when user data security is a top priority. Nowadays, many tools can be used for hacking a WhatsApp account, and they can tackle this task with varying degrees of success. Moreover, every such tool requires a different level of user training and is designed for different budget. The main difficulty is that the most common and affordable spyware programs must be installed on the victim's device. If victim's device is managed on iOS, Jailbreak is an absolute must. In general, the process will be costly, long and not always effective. Wasting many hours to set up and run software, you might discover that it is lacking some of the stated features. Or your target might even detect a monitoring session and identify tracking source.