SpyHunter is software that can be considered as a malware, as it uses unscrupulous techniques win new customers. Indeed, when the software is installed, it make use of a lot of resources and constantly displays fake security alerts. It is advertise as being an antivirus that will help you detect malwares and each time it scans your computer, it detects the presence the malwares (which is quite odd).
Do not get fooled, these are false alerts aiming to make you buy the full software!
To remove SpyHunter from your system: