Hlpradc is a malicious process used by a rogue application called Advanced Mac Cleaner or one of its variants. The affiliated scareware programs that are known to utilize this executable include Mac Ads Cleaner and Mac Adware Cleaner. Although the names differ, the behavior and objectives of these apps are nearly identical. They all report numerous security and performance issues on a Mac and try to dupe the victim into purchasing their license. Obviously, if you discover ‘hlpradc’ among the processes running on your Mac computer, be sure to terminate it immediately and proceed with removing the associated harmful app.