The United States is in the midst of an illicit fentanyl crisis that is multi-faceted and deadly. Fentanyl is a Schedule II synthetic opioid, used medically for severe pain relief in patients that are already opioid tolerant, and it is 50-100 times more potent than morphine. For reference, as little as two milligrams of pure fentanyl can be fatal.
GrooveMonitor.exe is a service that gets installed when you install Microsoft Office 2007 and belongs to GrooveMonitor utility. This means it tracks Microsoft Groove behavior and creates error reports which are sent back to the Microsoft.
CCleaner is a secure system optimization tool that is currently available for free download through various reputable websites, as well as through the original CCleaner website.