Through spyware, you will be able to gather information about a person through their phones, emails or social media account without their knowledge. The Tool Report will help you identify some of the most effective spyware options. Spyware comes in four main forms, tracking cookies, adware, Trojans and system monitors. Through spyware, you can monitor your child’s online activities, employee’s activities as well as your spouse. The benefits of using spyware are discussed below. But one must ensure that an effective spyware is used.